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  Subjects -> ENGINEERING (Total: 2298 journals)
    - CHEMICAL ENGINEERING (192 journals)
    - CIVIL ENGINEERING (192 journals)
    - ELECTRICAL ENGINEERING (104 journals)
    - ENGINEERING (1209 journals)
    - ENGINEERING MECHANICS AND MATERIALS (385 journals)
    - HYDRAULIC ENGINEERING (55 journals)
    - INDUSTRIAL ENGINEERING (69 journals)
    - MECHANICAL ENGINEERING (92 journals)

ENGINEERING (1209 journals)                  1 2 3 4 5 6 7 | Last

Showing 1 - 200 of 1205 Journals sorted alphabetically
3 Biotech     Open Access   (Followers: 7)
3D Research     Hybrid Journal   (Followers: 19)
AAPG Bulletin     Hybrid Journal   (Followers: 7)
AASRI Procedia     Open Access   (Followers: 15)
Abstract and Applied Analysis     Open Access   (Followers: 3)
Aceh International Journal of Science and Technology     Open Access   (Followers: 2)
ACS Nano     Full-text available via subscription   (Followers: 251)
Acta Geotechnica     Hybrid Journal   (Followers: 7)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 5)
Acta Polytechnica : Journal of Advanced Engineering     Open Access   (Followers: 2)
Acta Scientiarum. Technology     Open Access   (Followers: 3)
Acta Universitatis Cibiniensis. Technical Series     Open Access  
Active and Passive Electronic Components     Open Access   (Followers: 7)
Adaptive Behavior     Hybrid Journal   (Followers: 11)
Adıyaman Üniversitesi Mühendislik Bilimleri Dergisi     Open Access  
Adsorption     Hybrid Journal   (Followers: 4)
Advanced Engineering Forum     Full-text available via subscription   (Followers: 6)
Advanced Science     Open Access   (Followers: 5)
Advanced Science Focus     Free   (Followers: 3)
Advanced Science Letters     Full-text available via subscription   (Followers: 9)
Advanced Science, Engineering and Medicine     Partially Free   (Followers: 7)
Advanced Synthesis & Catalysis     Hybrid Journal   (Followers: 17)
Advances in Calculus of Variations     Hybrid Journal   (Followers: 2)
Advances in Catalysis     Full-text available via subscription   (Followers: 5)
Advances in Complex Systems     Hybrid Journal   (Followers: 7)
Advances in Engineering Software     Hybrid Journal   (Followers: 26)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 16)
Advances in Fuzzy Systems     Open Access   (Followers: 5)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 11)
Advances in Heat Transfer     Full-text available via subscription   (Followers: 22)
Advances in Human Factors/Ergonomics     Full-text available via subscription   (Followers: 26)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 9)
Advances in Natural Sciences: Nanoscience and Nanotechnology     Open Access   (Followers: 30)
Advances in Operations Research     Open Access   (Followers: 11)
Advances in OptoElectronics     Open Access   (Followers: 5)
Advances in Physics Theories and Applications     Open Access   (Followers: 12)
Advances in Polymer Science     Hybrid Journal   (Followers: 41)
Advances in Porous Media     Full-text available via subscription   (Followers: 4)
Advances in Remote Sensing     Open Access   (Followers: 40)
Advances in Science and Research (ASR)     Open Access   (Followers: 6)
Aerobiologia     Hybrid Journal   (Followers: 2)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 5)
AIChE Journal     Hybrid Journal   (Followers: 32)
Ain Shams Engineering Journal     Open Access   (Followers: 5)
Akademik Platform Mühendislik ve Fen Bilimleri Dergisi     Open Access   (Followers: 1)
Alexandria Engineering Journal     Open Access   (Followers: 1)
AMB Express     Open Access   (Followers: 1)
American Journal of Applied Sciences     Open Access   (Followers: 28)
American Journal of Engineering and Applied Sciences     Open Access   (Followers: 11)
American Journal of Engineering Education     Open Access   (Followers: 9)
American Journal of Environmental Engineering     Open Access   (Followers: 17)
American Journal of Industrial and Business Management     Open Access   (Followers: 23)
Analele Universitatii Ovidius Constanta - Seria Chimie     Open Access  
Annals of Combinatorics     Hybrid Journal   (Followers: 3)
Annals of Pure and Applied Logic     Open Access   (Followers: 2)
Annals of Regional Science     Hybrid Journal   (Followers: 8)
Annals of Science     Hybrid Journal   (Followers: 7)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2)
Applicable Analysis: An International Journal     Hybrid Journal   (Followers: 1)
Applied Catalysis A: General     Hybrid Journal   (Followers: 6)
Applied Catalysis B: Environmental     Hybrid Journal   (Followers: 18)
Applied Clay Science     Hybrid Journal   (Followers: 5)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 12)
Applied Magnetic Resonance     Hybrid Journal   (Followers: 4)
Applied Nanoscience     Open Access   (Followers: 8)
Applied Network Science     Open Access   (Followers: 1)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Physics Research     Open Access   (Followers: 3)
Applied Sciences     Open Access   (Followers: 2)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 5)
Arabian Journal for Science and Engineering     Hybrid Journal   (Followers: 5)
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 4)
Archives of Foundry Engineering     Open Access  
Archives of Thermodynamics     Open Access   (Followers: 7)
Arkiv för Matematik     Hybrid Journal   (Followers: 1)
ASEE Prism     Full-text available via subscription   (Followers: 3)
Asia-Pacific Journal of Science and Technology     Open Access  
Asian Engineering Review     Open Access  
Asian Journal of Applied Science and Engineering     Open Access   (Followers: 1)
Asian Journal of Applied Sciences     Open Access   (Followers: 2)
Asian Journal of Biotechnology     Open Access   (Followers: 8)
Asian Journal of Control     Hybrid Journal  
Asian Journal of Current Engineering & Maths     Open Access  
Asian Journal of Technology Innovation     Hybrid Journal   (Followers: 8)
Assembly Automation     Hybrid Journal   (Followers: 2)
at - Automatisierungstechnik     Hybrid Journal   (Followers: 1)
ATZagenda     Hybrid Journal  
ATZextra worldwide     Hybrid Journal  
Australasian Physical & Engineering Sciences in Medicine     Hybrid Journal   (Followers: 1)
Australian Journal of Multi-Disciplinary Engineering     Full-text available via subscription   (Followers: 2)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 9)
Avances en Ciencias e Ingeniería     Open Access  
Balkan Region Conference on Engineering and Business Education     Open Access   (Followers: 1)
Bangladesh Journal of Scientific and Industrial Research     Open Access  
Basin Research     Hybrid Journal   (Followers: 5)
Batteries     Open Access   (Followers: 6)
Bautechnik     Hybrid Journal   (Followers: 1)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 23)
Beni-Suef University Journal of Basic and Applied Sciences     Open Access   (Followers: 4)
BER : Manufacturing Survey : Full Survey     Full-text available via subscription   (Followers: 2)
BER : Motor Trade Survey     Full-text available via subscription   (Followers: 1)
BER : Retail Sector Survey     Full-text available via subscription   (Followers: 2)
BER : Retail Survey : Full Survey     Full-text available via subscription   (Followers: 2)
BER : Survey of Business Conditions in Manufacturing : An Executive Summary     Full-text available via subscription   (Followers: 3)
BER : Survey of Business Conditions in Retail : An Executive Summary     Full-text available via subscription   (Followers: 4)
Bharatiya Vaigyanik evam Audyogik Anusandhan Patrika (BVAAP)     Open Access   (Followers: 1)
Biofuels Engineering     Open Access   (Followers: 1)
Biointerphases     Open Access   (Followers: 1)
Biomaterials Science     Full-text available via subscription   (Followers: 10)
Biomedical Engineering     Hybrid Journal   (Followers: 15)
Biomedical Engineering and Computational Biology     Open Access   (Followers: 14)
Biomedical Engineering Letters     Hybrid Journal   (Followers: 5)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 18)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 34)
Biomedical Engineering: Applications, Basis and Communications     Hybrid Journal   (Followers: 5)
Biomedical Microdevices     Hybrid Journal   (Followers: 9)
Biomedical Science and Engineering     Open Access   (Followers: 4)
Biomedizinische Technik - Biomedical Engineering     Hybrid Journal  
Biomicrofluidics     Open Access   (Followers: 4)
BioNanoMaterials     Hybrid Journal   (Followers: 2)
Biotechnology Progress     Hybrid Journal   (Followers: 39)
Boletin Cientifico Tecnico INIMET     Open Access  
Botswana Journal of Technology     Full-text available via subscription   (Followers: 1)
Boundary Value Problems     Open Access   (Followers: 1)
Brazilian Journal of Science and Technology     Open Access   (Followers: 2)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 10)
Bulletin of Canadian Petroleum Geology     Full-text available via subscription   (Followers: 14)
Bulletin of Engineering Geology and the Environment     Hybrid Journal   (Followers: 14)
Bulletin of the Crimean Astrophysical Observatory     Hybrid Journal  
Cahiers, Droit, Sciences et Technologies     Open Access  
Calphad     Hybrid Journal  
Canadian Geotechnical Journal     Hybrid Journal   (Followers: 30)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 44)
Case Studies in Engineering Failure Analysis     Open Access   (Followers: 8)
Case Studies in Thermal Engineering     Open Access   (Followers: 4)
Catalysis Communications     Hybrid Journal   (Followers: 6)
Catalysis Letters     Hybrid Journal   (Followers: 2)
Catalysis Reviews: Science and Engineering     Hybrid Journal   (Followers: 8)
Catalysis Science and Technology     Free   (Followers: 7)
Catalysis Surveys from Asia     Hybrid Journal   (Followers: 3)
Catalysis Today     Hybrid Journal   (Followers: 7)
CEAS Space Journal     Hybrid Journal   (Followers: 1)
Cellular and Molecular Neurobiology     Hybrid Journal   (Followers: 3)
Central European Journal of Engineering     Hybrid Journal   (Followers: 1)
CFD Letters     Open Access   (Followers: 6)
Chaos : An Interdisciplinary Journal of Nonlinear Science     Hybrid Journal   (Followers: 2)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 3)
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Engineering     Open Access   (Followers: 2)
Chinese Science Bulletin     Open Access   (Followers: 1)
Ciencia e Ingenieria Neogranadina     Open Access  
Ciencia en su PC     Open Access   (Followers: 1)
Ciencias Holguin     Open Access   (Followers: 1)
CienciaUAT     Open Access  
Cientifica     Open Access  
CIRP Annals - Manufacturing Technology     Full-text available via subscription   (Followers: 11)
CIRP Journal of Manufacturing Science and Technology     Full-text available via subscription   (Followers: 14)
City, Culture and Society     Hybrid Journal   (Followers: 24)
Clay Minerals     Full-text available via subscription   (Followers: 10)
Clean Air Journal     Full-text available via subscription   (Followers: 2)
Coal Science and Technology     Full-text available via subscription   (Followers: 3)
Coastal Engineering     Hybrid Journal   (Followers: 11)
Coastal Engineering Journal     Hybrid Journal   (Followers: 5)
Coatings     Open Access   (Followers: 4)
Cogent Engineering     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 4)
Color Research & Application     Hybrid Journal   (Followers: 1)
COMBINATORICA     Hybrid Journal  
Combustion Theory and Modelling     Hybrid Journal   (Followers: 14)
Combustion, Explosion, and Shock Waves     Hybrid Journal   (Followers: 13)
Communications Engineer     Hybrid Journal   (Followers: 1)
Communications in Numerical Methods in Engineering     Hybrid Journal   (Followers: 2)
Components, Packaging and Manufacturing Technology, IEEE Transactions on     Hybrid Journal   (Followers: 27)
Composite Interfaces     Hybrid Journal   (Followers: 6)
Composite Structures     Hybrid Journal   (Followers: 268)
Composites Part A : Applied Science and Manufacturing     Hybrid Journal   (Followers: 193)
Composites Part B : Engineering     Hybrid Journal   (Followers: 272)
Composites Science and Technology     Hybrid Journal   (Followers: 191)
Comptes Rendus Mécanique     Full-text available via subscription   (Followers: 2)
Computation     Open Access  
Computational Geosciences     Hybrid Journal   (Followers: 15)
Computational Optimization and Applications     Hybrid Journal   (Followers: 7)
Computational Science and Discovery     Full-text available via subscription   (Followers: 2)
Computer Applications in Engineering Education     Hybrid Journal   (Followers: 8)
Computer Science and Engineering     Open Access   (Followers: 19)
Computers & Geosciences     Hybrid Journal   (Followers: 29)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 6)
Computers and Electronics in Agriculture     Hybrid Journal   (Followers: 4)
Computers and Geotechnics     Hybrid Journal   (Followers: 11)
Computing and Visualization in Science     Hybrid Journal   (Followers: 6)
Computing in Science & Engineering     Full-text available via subscription   (Followers: 32)
Conciencia Tecnologica     Open Access  
Concurrent Engineering     Hybrid Journal   (Followers: 3)
Continuum Mechanics and Thermodynamics     Hybrid Journal   (Followers: 7)
Control and Dynamic Systems     Full-text available via subscription   (Followers: 9)
Control Engineering Practice     Hybrid Journal   (Followers: 43)
Control Theory and Informatics     Open Access   (Followers: 8)
Corrosion Science     Hybrid Journal   (Followers: 25)
Corrosion Series     Full-text available via subscription   (Followers: 6)
CT&F Ciencia, Tecnologia y Futuro     Open Access   (Followers: 1)

        1 2 3 4 5 6 7 | Last

Journal Cover Ain Shams Engineering Journal
  [SJR: 0.434]   [H-I: 14]   [5 followers]  Follow
    
  This is an Open Access Journal Open Access journal
   ISSN (Online) 2090-4479
   Published by Elsevier Homepage  [3118 journals]
  • Optimizing acoustic conditions for two lecture rooms in Faculty of
           Agriculture, Cairo University

    • Authors: Soha Eldakdoky
      Pages: 481 - 490
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): Soha Eldakdoky
      This paper analyses the acoustic conditions inside two lecture rooms in faculty of agriculture, Cairo University, based on field measurements and simulation technique. Ambient noise and reverberation time were measured in the unoccupied rooms. The measurement results were utilized for validating the results of CATT software that was used to estimate occupied reverberation time, STI and C50. These parameters were analysed in comparison with rooms’ properties, optimal reverberation time and maximum acceptable noise for learning spaces. The results demonstrated that acoustic design of the first room is far from the recommended values, whereas the second room includes many defects. For optimizing the rooms’ performance, acoustic treatments were proposed and explored. Results clarified that reducing the excessive reverberation to the optimal value, either by increasing room absorption or decreasing room volume, significantly optimizes speech intelligibility. The results also clarified that reforming the ceiling eliminated the shadow and increased the early reflections.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2016.08.013
       
  • Enhanced hydrosuction performance for cohesive sediment removal in
           low-head reservoirs

    • Authors: P. Asiaban; S. Kouchakzadeh; S. Asiaban
      Pages: 491 - 497
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): P. Asiaban, S. Kouchakzadeh, S. Asiaban
      Deposited sediment removal or dredging is generally required in many hydro-system projects. Siphon dredging or hydrosuction bears many advantages including low energy consumption, minor turbidity generation and ability of localized dredging. A new device attached to a regular siphon inlet is introduced which produces a swinging action by means of a simple mechanism. Equipped siphon sweeps a larger area than what a regular siphon does and enhances the hydrosuction performance for cohesive sediment removal. Regular and equipped siphon performances for dredging non-cohesive and cohesive sediments were investigated experimentally. Time to reach equilibrium scour was determined and applied for all the tests. The equipped siphon generated larger scour holes in cohesive sediment type than that of the regular one and enhanced sediment removal process. This could be attributed to the swinging action of the siphon inlet which strikes the scour hole wall and acts against the cohesion property of the sediment.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2016.07.001
       
  • Minimizing scour around bridge pile using holes

    • Authors: E.A. Elnikhely
      Pages: 499 - 506
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): E.A. Elnikhely
      Driven by the importance of bridges, researchers are currently undergoing profound paradigm to implement piles to reduce the scour due to the erosive action of flowing water. This research aimed to investigate the minimization of the scour hole around a bridge pile, experimentally. Perforated piles with holes with different orientations were tested, a sacrificial pile and perforated sacrificial pile were placed at the upstream. Measurements were performed, analyzed and presented. Empirical equations were formulated to evaluate the scour parameters. The results indicated that about 89% reduction in scour depth was obtained due to using the combination of pile with hole angle of 45° and a perforated sacrificial pile with hole angle of 45° and hole diameter equals 0.43 of the pile diameter. The results of this study may be used in the field of application for the purpose of bridge pile protection design.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2016.06.016
       
  • Traffic micro-simulation model for design and operational analysis of
           barrier toll stations

    • Authors: Hassan T. Abdelwahab
      Pages: 507 - 513
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): Hassan T. Abdelwahab
      The objective of this paper was the development of a microscopic traffic simulation model for design, assessment, and operational analysis of toll stations. A simulation software using VB.NET was created to simulate the stochastic nature of traffic arrival, toll collection time, and driver decision making. The developed simulation model was used to analyze different scenarios of traffic volumes, toll booth capacity, driver types, and configuration of toll station. Results showed that volume per toll lane and method of payment significantly affect the average delay and maximum queue lengths of a toll station. Recommendations on number of toll booths are presented in order to process peak traffic hours without excessive delay times or long queues.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2016.05.010
       
  • Hydraulic characteristics of flow over weirs with circular openings

    • Authors: Neveen Y. Saad; Ehab M. Fattouh
      Pages: 515 - 522
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): Neveen Y. Saad, Ehab M. Fattouh
      Weirs may be used to control the discharge, decrease the water slope in canals and to distribute water between canals for irrigation, etc. The objective of this research was to investigate the influence of using one opening or more in weirs on discharge coefficient (Cd ), the hydraulic jump characteristics and velocity distribution downstream of these structures. This study is based on an experimental program. Three cases of openings arrangements were included, one, two and three openings. Different diameters of openings (D) and different heights from the bed (Z) were tested. The experiments showed that decreasing (D/Z) for weirs which have the same openings numbers and diameters decreases the discharge coefficient (Cd ) and the ratio between the length of the submerged hydraulic jump (Lj ) and the water tail depth (yt ). Also, decreasing (D/Z) leads to make the maximum velocity near the bed tends to be lifted upward. Moreover, Comparing weirs with different openings numbers but have the same openings area leads to that, weirs with one opening have a bigger (Cd ) than weirs with two or three openings but the maximum velocity near the bed of the weir with three openings is less than that with one opening. Also, the hydraulic jump length downstream weir with three openings is less than that downstream weir with one opening. Finally, equations were developed to deduce the value of the coefficient of discharge for the composite structure.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2016.05.007
       
  • Study for the relevance of coconut shell aggregate concrete non-pressure
           pipe

    • Authors: K. Gunasekaran; R. Annadurai; S. Prakash Chandar; S. Anandh
      Pages: 523 - 530
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): K. Gunasekaran, R. Annadurai, S. Prakash Chandar, S. Anandh
      The general behaviour of coconut shell aggregate concrete pipe is comparable to that of conventional concrete pipe. Three-edge bearing test results show that, both coconut shell aggregate concrete and conventional concrete pipes abide more load than load specified as per IS 458: 2003. The application of hydro static pressure not resulted in the formation of beads of water on the pipe surface during the application of the test pressure of 0.07N/mm2 as per IS 458: 2003. Absorption properties of both coconut shell aggregate concrete and conventional concrete pipes are well within the allowable limits as per IS 458:1988 on the conditions specified. Test results and performance of coconut shell aggregate concrete pipes encourage the use of coconut shell as an aggregate for the replacement of conventional coarse aggregate in reinforced concrete pipes production.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2016.02.011
       
  • Finite element analysis of reinforced concrete beams with opening
           strengthened using FRP

    • Authors: Nasr Z. Hassan; Alaa G. Sherif; Amal H. Zamarawy
      Pages: 531 - 537
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): Nasr Z. Hassan, Alaa G. Sherif, Amal H. Zamarawy
      Transverse openings are often provided through reinforced concrete beams to accommodate utility ducts and pipes. Finite element analysis has been used in order to study this problem. Fifty-seven beams analyzed using finite element program ANSYS V12. The analysis results compared with fifteen experimental beams had been done by Ibrahim. Study beams have opening width and height of dimensions 200×100mm and 300×100mm. The centerline of the opening is at distance of 225, 300, 350 and 400mm from the near support. Strengthening of all beams with opening came out to six types of different scheme around the opening using fiber-reinforced polymer (FRP). Scheme (1) is vertical and horizontal carbon fiber sheets around the opening, scheme (2) is inclined at 45° carbon fiber sheets around the opening in addition to horizontal one, schemes (3) and (4) are same of schemes (1) and (2) respectively but with glass fiber sheets, while schemes (5) and (6) are same as schemes (3) and (4) respectively but with an additional strengthening at flexural area at the middle of the beam with U shape. The reinforced concrete beams were modeled in ‘ANSYS V12’ Program under statical load. The failure loads, crack pattern, strain progress, mode of failure and energy absorption were analyzed here in this study.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2015.10.011
       
  • Enhancing the CPT correlation with the small strain shear stiffness of
           sands

    • Authors: Sayed M. Ahmed
      Pages: 539 - 548
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): Sayed M. Ahmed
      The cone penetration test (CPT) is a valuable geotechnical insitu test. Yet, the CPT correlations with the small strain shear modulus and seismic shear wave velocity still need more research to enhance their accuracy. In this study, the stress normalizations for the net cone tip resistance and the small strain shear modulus are scrutinized. Subsequently, enhanced CPT correlations with the small strain shear modulus and the seismic shear wave velocity for sands are presented. The proposed approach utilizes published databases of CPT in sands and recent researches that quantify the small strain shear modulus using sand gradation parameters. Four case histories are analyzed using the suggested correlation and the results confirm that the presented approach is a promising enhancement to the CPT correlations with the small strain shear modulus and seismic shear wave velocity in sands.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2016.08.010
       
  • Data-driven modeling for water quality prediction case study: The drains
           system associated with Manzala Lake, Egypt

    • Authors: Mosaad Khadr; Mohamed Elshemy
      Pages: 549 - 557
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): Mosaad Khadr, Mohamed Elshemy
      Manzala Lake, the largest of the Egyptian lakes, is affected qualitatively and quantitatively by drainage water that flows into the lake. This study investigated the capabilities of adaptive neuro-fuzzy inference system (ANFIS) to predict water quality parameters of drains associated with Manzala Lake, with emphasis on total phosphorus and total nitrogen. A combination of data sets was considered as input data for ANFIS models, including discharge, pH, total suspended solids, electrical conductivity, total dissolved solids, water temperature, dissolved oxygen and turbidity. The models were calibrated and validated against the measured data for the period from year 2001 to 2010. The performance of the models was measured using various prediction skill criteria. Results show that ANFIS models are capable of simulating the water quality parameters and provided reliable prediction of total phosphorus and total nitrogen, thus suggesting the suitability of the proposed model as a tool for onsite water quality evaluation.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2016.08.004
       
  • Prediction of scour caused by 2D horizontal jets using soft computing
           techniques

    • Authors: Masoud Karbasi; H. Md. Azamathulla
      Pages: 559 - 570
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): Masoud Karbasi, H. Md. Azamathulla
      This paper presents application of five soft-computing techniques, artificial neural networks, support vector regression, gene expression programming, grouping method of data handling (GMDH) neural network and adaptive-network-based fuzzy inference system, to predict maximum scour hole depth downstream of a sluice gate. The input parameters affecting the scour depth are the sediment size and its gradation, apron length, sluice gate opening, jet Froude number and the tail water depth. Six non-dimensional parameters were achieved to define a functional relationship between the input and output variables. Published data were used from the experimental researches. The results of soft-computing techniques were compared with empirical and regression based equations. The results obtained from the soft-computing techniques are superior to those of empirical and regression based equations. Comparison of soft-computing techniques showed that accuracy of the ANN model is higher than other models (RMSE =0.869). A new GEP based equation was proposed.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2016.04.001
       
  • Design and implementation of a low-cost maximization power conversion
           system for brushless DC generator

    • Authors: Abolfazl Halvaei Niasar; AmirHossein Sabbaghean
      Pages: 571 - 580
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): Abolfazl Halvaei Niasar, AmirHossein Sabbaghean
      This paper presents a simple and low-cost method to capture maximum power throughput of permanent magnet brushless DC (BLDC) generator. Conventional methods of rectification are based on passive converters, and because the current waveform cannot be controlled as ideal waveform, a highly distorted current is drawn from brushless generator. It leads to lower power factor and reduces the efficiency and power per ampere capability. So, in this study an active six-witch power converter is employed and based on the phase back-EMF voltage, an optimum current waveform is generated. The phase currents are controlled inphase to phase voltages and their magnitudes are adjusted to regulate the DC-link voltage. Proposed control theory is verified by simulations for BLDC generator and permanent magnet synchronous generator (PMSG). Moreover, some experimental results are given to demonstrate the theoretical and simulation results.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2015.11.001
       
  • Mitigation of voltage dip and power system oscillations damping using dual
           STATCOM for grid connected DFIG

    • Authors: D.V.N. Ananth; G.V. Nagesh Kumar
      Pages: 581 - 592
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): D.V.N. Ananth, G.V. Nagesh Kumar
      During grid fault, transmission lines reach its thermal limit and lose its capability to transfer. If this fault current enters generator terminals, it will lead to dip in stator voltage and consequently produces torque and real power oscillations. This further affects in the form of internal heat in rotor windings and finally damages the generator. A new control strategy is proposed to limit fault current using dual STATCOM, which will damp power oscillations and mitigate the voltage dip due to a severe symmetrical fault. It is achieved by diverting the fault current to the capacitor using the dual-STATCOM controller. It is best suitable to maintain power system stability with uninterrupted power supply, effective power transfer capability and rapid reactive power support and to damp inter-area oscillations. The effectiveness of SG and DFIG due to the transmission line short circuit symmetrical fault was studied.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2015.12.002
       
  • Distributed generations planning using flower pollination algorithm for
           enhancing distribution system voltage stability

    • Authors: Eyad S. Oda; Abdelazeem A. Abdelsalam; Mohamed N. Abdel-Wahab; Magdi M. El-Saadawi
      Pages: 593 - 603
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): Eyad S. Oda, Abdelazeem A. Abdelsalam, Mohamed N. Abdel-Wahab, Magdi M. El-Saadawi
      Distributed generations (DGs) have been utilized in some electric power networks. Power loss reductions, voltage improvement, increasing reliability, postponement of system upgrading and environmental friendliness are some advantages of DG-unit applications. This paper presents a new optimization approach that employs a flower pollination algorithm (FPA) to determine the optimal DG-unit’s size and location in order to minimize the total system real power loss and improve the system buses voltage. The FPA is a new metaheuristic optimization technique and it is inspired by the reproduction strategy of the flow pollination process of flowering plants. To reveal the validity of the FPA algorithm, IEEE 33-bus, 69-bus and 136-bus radial distribution test systems are examined with different test cases of the objective function using the MATLAB. Furthermore, the results obtained by the proposed FPA algorithm are compared with other metaheuristic optimization techniques such as backtracking search optimization algorithm, artificial bee colony, and selection algorithm. The outcomes verify that the FPA algorithm is efficient, robust, and capable of handling mixed integer nonlinear optimization problems.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2015.12.001
       
  • Peristaltic pumping of a power – Law fluid in contact with a Jeffrey
           fluid in an inclined channel with permeable walls

    • Authors: S. Sreenadh; K. Komala; A.N.S. Srinivas
      Pages: 605 - 611
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): S. Sreenadh, K. Komala, A.N.S. Srinivas
      The paper investigates peristaltic flow of a Power-law fluid in contact with a Jeffrey fluid in an inclined channel with permeable walls under long wavelength and low Reynolds number approximations. Power-law fluid is considered in the core region and Jeffrey fluid in the peripheral region. Expressions for the shape of interface between the two fluids and the pressure rise are obtained. It is observed that an increase in permeability parameter increases the thickness of the core layer in the channel. It is also observed that pressure rise increases with decrease in the Jeffrey parameter.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2015.08.019
       
  • Thermal convection in a Kuvshiniski viscoelastic nanofluid saturated
           porous layer

    • Authors: Dhananjay Yadav; R.A. Mohamed; Jinho Lee; Hyung Hee Cho
      Pages: 613 - 621
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): Dhananjay Yadav, R.A. Mohamed, Jinho Lee, Hyung Hee Cho
      The thermal convection in a horizontal layer of a porous medium saturated with a viscoelastic nanofluid was studied analytically. A Kuvshiniski-type constitutive equation is used to describe the behavior of viscoelastic nanofluids. The model used for the viscoelastic nanofluid incorporates the effects of Brownian motion and thermophoresis. A physically more realistic boundary condition than the previous ones on the nanoparticle volume fraction is considered i.e. the nanoparticle flux is assumed to be zero rather than prescribing the nanoparticle volume fraction on the boundaries. Using linear stability theory, the exact analytical expression for the Darcy–Rayleigh number is obtained in terms of various non-dimensional parameters. Results indicate that the coefficient of viscosity, porous medium and nanoparticles significantly influences the stability characteristics of the system. The effect of various parameters on the thermal instability is also presented graphically.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2015.11.023
       
  • Entropy generation analysis for viscoelastic MHD flow over a stretching
           sheet embedded in a porous medium

    • Authors: S. Baag; S.R. Mishra; G.C. Dash; M.R. Acharya
      Pages: 623 - 632
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): S. Baag, S.R. Mishra, G.C. Dash, M.R. Acharya
      In this paper it is intended to analyse entropy generation by applying second law of thermodynamics to magnetohydrodynamic flow, heat and mass transfer of an electrically conducting viscoelastic liquid (Walters B ′ ) past on a stretching surface, taking into account the effects of Joule dissipation, viscous dissipation and Darcy dissipation, and internal heat generation. The boundary layer equations are solved analytically by using Kummer’s function. The entropy generation has been computed considering Darcy dissipation besides viscous and Joule dissipation. Results for some special cases of the present analysis are in good agreement with the existing literature. Increase in viscoelastic and magnetic parameter reduces the velocity. Increase in elastic parameter causes a greater retardation in the velocity. Presence of porous matrix enhances temperature whereas increase in Prandtl number decreases the temperature. One striking result of the present study is that Darcy dissipation favours higher level entropy generation in all the cases except the flow of liquid with low thermal diffusivity assuming the process to be irreversible.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2015.10.017
       
  • Electro-thermal convection in a Brinkman porous medium saturated by
           nanofluid

    • Authors: Ramesh Chand
      Pages: 633 - 641
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): Ramesh Chand
      Thermal instability in a horizontal layer of nanofluid with vertical AC electric field in a porous medium is investigated. Brinkman–Darcy model is used for the momentum equation. The model used for nanofluid incorporates the effect of Brownian diffusion, thermophoresis and electrophoresis. The flux of volume fraction of nanoparticles is taken to be zero on the isothermal boundaries and the eigenvalue problem is solved by using the Galerkin method. Linear stability theory based upon the normal mode technique is employed for stability analysis. Oscillatory convection has been ruled out for the problem and graphs have been plotted to study the effects of Brinkman–Darcy number, Lewis number, modified diffusivity ratio, concentration Rayleigh number, AC electric Rayleigh number and porosity parameters on stationary convection.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2015.10.008
       
  • Transient free convection flow past vertical cylinder with constant heat
           flux and mass transfer

    • Authors: Rudra Kanta Deka; Ashish Paul; Arun Chaliha
      Pages: 643 - 651
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): Rudra Kanta Deka, Ashish Paul, Arun Chaliha
      This paper describes a one dimensional unsteady natural convection flow past an infinite vertical cylinder with heat and mass transfer under the effect of constant heat flux at the surface of the cylinder. Closed form solutions of the dimensionless unsteady linear governing boundary layer equations are obtained in terms of Bessel functions and modified Bessel functions by Laplace transform method. The numerical values of velocity, temperature and concentration profiles are obtained for different values of the physical parameters namely, thermal Grashof number, mass Grashof number, Prandtl number, Schmidt number and time and presented in graphs. Also, skin friction and Sherwood number are shown graphically and discussed. It is observed that the velocity and temperature increase unboundedly with time, while the concentration approaches steady state at larger times.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2015.10.006
       
  • Mathematical propositions associated with the connectivity of
           architectural designs

    • Authors: Krishnendra Shekhawat
      Pages: 653 - 661
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): Krishnendra Shekhawat
      If there exist many computer-generated architectural designs for a given set of data, then for an architect it is difficult to single one solution out among many possibilities. In this paper, we propose a technique to refine the number of possible designs on the basis of their connectivity, which is given in terms of adjacency relations among the rooms. In addition, we present few mathematical results to study the topological properties of the architectural designs, that would also be useful for the validation of proposed technique and for the classification of different architectural designs.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2015.09.009
       
  • An exponentially fitted finite difference scheme for a class of singularly
           perturbed delay differential equations with large delays

    • Authors: P. Pramod Chakravarthy; S. Dinesh Kumar; R. Nageshwar Rao
      Pages: 663 - 671
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): P. Pramod Chakravarthy, S. Dinesh Kumar, R. Nageshwar Rao
      This paper deals with singularly perturbed boundary value problem for a linear second order delay differential equation. It is known that the classical numerical methods are not satisfactory when applied to solve singularly perturbed problems in delay differential equations. In this paper we present an exponentially fitted finite difference scheme to overcome the drawbacks of the corresponding classical counter parts. The stability of the scheme is investigated. The proposed scheme is analyzed for convergence. Several linear singularly perturbed delay differential equations have been solved and the numerical results are presented to support the theory.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2015.09.004
       
  • A comparative study of leaves extracts for corrosion inhibition effect on
           aluminium alloy in alkaline medium

    • Authors: Namrata Chaubey; Dileep Kumar Yadav; Vinod Kumar Singh; M.A. Quraishi
      Pages: 673 - 682
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): Namrata Chaubey, Dileep Kumar Yadav, Vinod Kumar Singh, M.A. Quraishi
      This paper deals with the comparative inhibition study of some plants leaves extract namely Cannabis sativa (CS), Rauwolfia serpentina (RS), Cymbopogon citratus (CC), Annona squamosa (AS) and Adhatoda vasica (AV) on the corrosion of aluminium alloy (AA) in 1M NaOH. The corrosion tests were performance by using gravimetric, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and linear polarization resistance (LPR) techniques. RS showed maximum inhibition efficiency (η%), 97% at 0.2gL−1. Potentiodynamic polarization curves justified that all the inhibitors are mixed-type. Surface morphology of AA is carried by scanning electron microscopy (SEM) and atomic force microscopy (AFM).

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2015.08.020
       
  • Peristaltic transport of a Jeffrey fluid in contact with a Newtonian fluid
           in an inclined channel

    • Authors: A. Kavitha; R. Hemadri Reddy; R. Saravana; S. Sreenadh
      Pages: 683 - 687
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): A. Kavitha, R. Hemadri Reddy, R. Saravana, S. Sreenadh
      The peristaltic flow of a Jeffrey fluid in contact with a Newtonian fluid in an inclined symmetric channel is analyzed under the assumptions of long wavelength and low Reynolds number. The channel is inclined at angle of β with the horizontal. This model is useful to understand the two fluid flow behaviors in physiological systems. The velocity field, stream function, interface shape, pressure rise and frictional force at the wall over one cycle of wavelength are obtained and the results are shown graphically. It is observed that the variation of the interface shape gives rise to thinner peripheral region with increasing Jeffrey parameter λ 1 .

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2015.10.014
       
  • Effects of nano metal oxide blended Mahua biodiesel on CRDI diesel engine

    • Authors: C. Syed Aalam; C.G. Saravanan
      Pages: 689 - 696
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): C. Syed Aalam, C.G. Saravanan
      In this paper, aluminium oxide nanoparticles (ANPs) were added to Mahua biodiesel blend (MME20) in different proportions to investigate the effects on a four stroke, single cylinder, common rail direct injection (CRDI) diesel engine. The ANPs were doped in different proportions with the Mahua biodiesel blend (MME20) using an ultrasonicator and a homogenizer with cetyl trimethyl ammonium bromide (CTAB) as the cationic surfactant. The experiments were conducted in a CRDI diesel engine at a constant speed of 1500rpm using different ANP-blended biodiesel fuel (MME20+ANP50 and MME20+ANP100) and the results were compared with those of neat diesel and Mahua biodiesel blend (MME20). The experimental results exposed a substantial enhancement in the brake thermal efficiency and a marginal reduction in the harmful pollutants (such as CO, HC and smoke) for the nanoparticles blended biodiesel.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2015.09.013
       
  • Non-similar solutions of mixed convection flow from an exponentially
           stretching surface

    • Authors: P.M. Patil; D.N. Latha; S. Roy; Ebrahim Momoniat
      Pages: 697 - 705
      Abstract: Publication date: December 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 4
      Author(s): P.M. Patil, D.N. Latha, S. Roy, Ebrahim Momoniat
      In this paper we focus on to obtaining non-similar solutions for steady two dimensional double diffusive mixed convection boundary layer flows over an impermeable exponentially stretching sheet in an exponentially moving free stream under the influence of chemically reactive species. The nonlinear partial differential equations governing the flow, temperature and species concentration fields are presented in non-dimensional form with the help of suitable non-similar transformations. The resulting final non-dimensional set of coupled nonlinear partial differential equations is solved by using an implicit finite difference scheme in combination with the Newton’s linearization technique. The effects of various non-dimensional physical parameters on velocity, temperature and species concentration fields are discussed. The results reveal that the streamwise coordinate ξ remarkably influences the flow, thermal and solutal concentration fields which display the existence of non-similar solutions.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2015.10.012
       
  • Design and analysis of 0.127m (5″) Cutthroat flume

    • Authors: Rajib Das; Milan Nayek; Subhasish Das; Prasun Dutta; Asis Mazumdar
      Pages: 295 - 303
      Abstract: Publication date: September 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 3
      Author(s): Rajib Das, Milan Nayek, Subhasish Das, Prasun Dutta, Asis Mazumdar
      The aim of the present work was to perform series of detailed laboratory experiments under steady-state flow conditions through a Cutthroat flume of throat width 0.127m (5″) and length 0.918m. It is very important to perform research and propose equations for Cutthroat flume of throat-width 5″ as very rare work could be found on Cutthroat flume of this dimension. Experiments were conducted in laboratory designed and constructed 5″ throat width Cutthroat flume. Free flow and submerged flow calibrations were done within flow range of 0.005–0.0267m3/s. Equations applicable for both free flow and submerged flow regime were proposed and Ditchrider’s table for field implementation of the flume was prepared. Results of the calibration show that under favorable operating conditions of the discharge within calibrated flow, the proposed equation can determine accurately the discharge with maximum error up to +5% in both free flow and submerged flow regime.

      PubDate: 2017-09-14T22:57:16Z
      DOI: 10.1016/j.asej.2015.07.017
       
  • Design parameters for waste effluent treatment unit from beverages
           production

    • Authors: Mona A. Abdel-Fatah; H.O. Sherif; S.I. Hawash
      Pages: 305 - 310
      Abstract: Publication date: September 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 3
      Author(s): Mona A. Abdel-Fatah, H.O. Sherif, S.I. Hawash
      Based on a successful experimental result from laboratory and bench scale for treatment of wastewater from beverages industry, an industrial and efficient treatment unit is designed and constructed. The broad goal of this study was to design and construct effluent, cost effective and high quality treatment unit. The used technology is the activated sludge process of extended aeration type followed by rapid sand filters and chlorination as tertiary treatment. Experimental results have been considered as the basis for full scale design of the industrial capacity of 1600m3/day treatment plant. Final effluent characteristics after treatment comply with Egyptian legalizations after reducing COD and BOD5 by about 97% and 95% respectively. So it is recommended to reuse treated effluent in textile industry in dyeing process.

      PubDate: 2017-09-14T22:57:16Z
      DOI: 10.1016/j.asej.2016.04.008
       
  • Quantifying and modeling of stream network using digital elevation models

    • Authors: Daisy Paul; V. Ravibabu Mandla; Tejpal Singh
      Pages: 311 - 321
      Abstract: Publication date: September 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 3
      Author(s): Daisy Paul, V. Ravibabu Mandla, Tejpal Singh
      Quantifying and modeling of stream network using DEMs is the primary objective to understand earth surface processes. In the present study, DEMs of different quality, i.e. resolution, are evaluated for stream network quantification and modeling. The results are very encouraging in terms of the shape and geometry of the stream network. They emphasize the strong control of the DEM resolution and thresholding of flow accumulation/drainage area. Further, comparisons of the various morphometric parameters are also quite promising. The study highlights different relationships between various morphometric parameters obtained from the two DEMs used, thereby paving the way for the use of DEMs of different resolutions, interchangeably.

      PubDate: 2017-09-14T22:57:16Z
      DOI: 10.1016/j.asej.2015.09.002
       
  • Fourier spectral methods for numerical solving the problem of boundary
           control of the linear wave equation

    • Authors: Hassan Zarei
      Pages: 333 - 339
      Abstract: Publication date: September 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 3
      Author(s): Hassan Zarei
      In this paper, a Fourier spectral method is used to reduce the optimal boundary control problem for a two-dimensional wave equation to a countable number of control problems for a one-dimensional wave equation which are transformed to the optimal control problems with integral constraints using the Laplace transform. The numerical integration and differentiation methods are used to approximate the resulting problems with quadratic programming problems. An illustrative numerical example is presented to indicate the efficiency of the proposed method.

      PubDate: 2017-09-14T22:57:16Z
      DOI: 10.1016/j.asej.2015.07.018
       
  • Radiative nanofluid flow and heat transfer over a non-linear permeable
           sheet with slip conditions and variable magnetic field: Dual solutions

    • Authors: Puneet Rana; Ruchika Dhanai; Lokendra Kumar
      Pages: 341 - 352
      Abstract: Publication date: September 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 3
      Author(s): Puneet Rana, Ruchika Dhanai, Lokendra Kumar
      Objective This paper addresses numerical investigation of steady, magneto-hydrodynamic boundary-layer slip flow of a nanofluid past a permeable stretching/shrinking sheet with thermal radiation using RKF45 with shooting technique. The effect of viscous dissipation, suction/injection, Brownian motion, thermophoresis, partial velocity slip and thermal slip is taken into account and controlled by the non-dimensional parameters. Results and conclusions The dual solutions are obtained for the skin friction, Nusselt number, temperature and nanoparticle volume fraction with pertinent parameters in the domain χ c , ∞ and s c , ∞ . The study shows that the Nusselt number decreases with an increase in thermophoresis parameter Nt and thermal slip parameter δ but increases with thermal radiation R and Prandtl number Pr. Practice implications The present problem has numerous applications in engineering and petroleum industries such as glass blowing, annealing and thinning of copper wires. The study of radiation heat transfer plays an important role in the industrial applications at high temperature.

      PubDate: 2017-09-14T22:57:16Z
      DOI: 10.1016/j.asej.2015.08.016
       
  • Dissipation effect on MHD mixed convection flow over a stretching sheet
           through porous medium with non-uniform heat source/sink

    • Authors: D. Bhukta; G.C. Dash; S.R. Mishra; S. Baag
      Pages: 353 - 361
      Abstract: Publication date: September 2017
      Source:Ain Shams Engineering Journal, Volume 8, Issue 3
      Author(s): D. Bhukta, G.C. Dash, S.R. Mishra, S. Baag
      Dissipative effect on magnetohydrodynamic (MHD) mixed convective unsteady flow of an electrically conducting fluid over a stretching sheet embedded in a porous medium subject to transverse magnetic field in the presence of non-uniform heat source/sink has been investigated in this paper. The method of solution involves similarity transformation. The coupled nonlinear partial differential equations governing flow, heat and mass transfer phenomena are reduced into set of nonlinear ordinary differential equations. The transformed equations are solved numerically by using Runge–Kutta fourth order method associated with shooting technique. The numerical computation of skin friction, Nusselt number and Sherwood number is presented in tables. The work of previous authors is compared with the present work as particular cases in the absence of unsteady parameter, solutal buoyancy, Darcy dissipation and chemical reaction. The results of steady and unsteady cases are also discussed. The important findings are as follows: effect of electric field enhances the skin friction contributing to flow instability. Higher Prandtl number is suitable for the reduction of coefficient of skin friction which is desirable.

      PubDate: 2017-09-14T22:57:16Z
      DOI: 10.1016/j.asej.2015.08.017
       
  • A new framework to enhance Evolution-COnstructed object recognition method

    • Authors: Muhammad H. Zayyan; Mohammed F. AlRahmawy; Samir Elmougy
      Abstract: Publication date: Available online 1 December 2017
      Source:Ain Shams Engineering Journal
      Author(s): Muhammad H. Zayyan, Mohammed F. AlRahmawy, Samir Elmougy
      This paper presents a new approach for reinforcing a recent method named Evolution-Constructed (ECO). ECO is an ensemble learning approach which combines predictions of multiple weak classifiers. Our framework includes two enhancements. First, we utilize different linear/nonlinear base classifiers. Second, we employ different ensemble types such as bagging and boosting to combine these classifiers. It is our hypothesis that there is no single combination of base classifier and ensemble type used on given datasets that leads to obtain maximum accuracy. Furthermore, we implement our proposed framework to process classifiers concurrently to enhance the running time. Experimental results showed that the proposed method has a competitive performance over contemporary methods for different object datasets.

      PubDate: 2017-12-26T16:22:03Z
      DOI: 10.1016/j.asej.2017.10.003
       
  • Simulation of EAF refining stage

    • Authors: M.M. Elkoumy; M. El-Anwar; A.M. Fathy; G.M. Megahed; I. El-Mahallawi; H. Ahmed
      Abstract: Publication date: Available online 8 November 2017
      Source:Ain Shams Engineering Journal
      Author(s): M.M. Elkoumy, M. El-Anwar, A.M. Fathy, G.M. Megahed, I. El-Mahallawi, H. Ahmed
      The refining stage in the electric arc furnace contributes to the enhancement of the metallurgical and industrial parameters and the improvement of performance in steelmaking plants. The aim of this study is to compare effects induced by natural and forced convection stirring. Two 3D computational fluid dynamics models were prepared to analyze the melt flow and heat profiles inside the electric arc furnace using FLUENT software. The modeling utilized transient solver with realize k-ɛ turbulence model, in natural and forced convection cases. The results of this work (represented by screenshots for velocity and temperature distributions) indicated maximum and minimum values locations. The maximum melt velocity inside the electric arc furnace was found at the steel melt outlet. Aim The refining stage in the electric arc furnace contributes to the enhancement of the metallurgical and industrial parameters and the improvement of performance in steelmaking plants. The aim of this study is to compare effects induced by natural and forced convection stirring. Methods Two 3D computational fluid dynamics models were prepared to analyze the melt flow and heat profiles inside the electric arc furnace using FLUENT software. The modeling utilized transient solver with realize k-ɛ turbulence model, in natural and forced convection cases. Results screenshots for velocity and temperature distributions indicated maximum and minimum values locations. Conclusions the maximum melt velocity inside the electric arc furnace was found at the steel melt outlet.

      PubDate: 2017-11-10T09:14:03Z
      DOI: 10.1016/j.asej.2017.10.002
       
  • Stability improvement of power systems connected with developed wind farms
           using SSSC controller

    • Authors: Ahmed Rashad; Salah Kamel; Francisco Jurado
      Abstract: Publication date: Available online 7 November 2017
      Source:Ain Shams Engineering Journal
      Author(s): Ahmed Rashad, Salah Kamel, Francisco Jurado
      This paper studies the performance of SCIG wind farm, DFIG wind farm, and a combined wind farm (CWF) during three-phase grid fault. The SCIG and DFIG wind farms are equipped with Static Synchronous Series Compensator (SSSC) whereas the combined wind farm did not have one. Since the CWF is composed of an equal number of Double Feed Induction Generators (DFIGs) and Squirrel Cage Induction Generators (SCIGs), it incorporated the main advantages of both types of generator. More specifically, the SCIG has a lower cost, but its drawback lies in its negative impact on system stability, especially when it operates without a shunt compensator. On the other hand, the DFIG, though more expensive, is better able to maintain the stability of the system. The SCIG and DFIG wind farms are equipped with SSSC controller to control the active and reactive line power flow. The results of a comparative study of DFIG and SCIG wind farms with SSSC and combined wind farm without SSSC during a three-phase grid fault showed that even though the SSSC improved the performance of the DFIG and SCIG wind farms, the CWF without the SSSC controller is found to have the best performance. The stability of the three wind farms is examined using Voltage Stability Index (VSI). All of the test scenarios are simulated with MATLAB.

      PubDate: 2017-11-10T09:14:03Z
      DOI: 10.1016/j.asej.2017.03.015
       
  • Hybrid fuzzy back-propagation control scheme for multilevel unified power
           quality conditioner

    • Authors: V. Veera Nagireddy; Venkata Reddy Kota; D.V. Ashok Kumar
      Abstract: Publication date: Available online 6 November 2017
      Source:Ain Shams Engineering Journal
      Author(s): V. Veera Nagireddy, Venkata Reddy Kota, D.V. Ashok Kumar
      To increase the lifetime and performance of equipment in utility distribution systems, the enhancement of power quality is essential. In this paper, to enhance the power quality, we present the design of a hybrid fuzzy back-propagation control scheme for a unified power quality Conditioner. The gating pulses of the UPQC are generated using hybrid fuzzy-back propagation controllers. The reference currents for the controller are estimated using back-propagation algorithms with source currents and load currents as input control parameters. The reference voltages for the controllers are estimated using fuzzy logic controllers for the dc voltage regulator with a terminal voltage, and a dc voltage for the input control parameters. We perform this analysis in zero-voltage regulation mode and power factor correction mode in a multilevel UPQC-connected distribution system. We analyze the results of the total harmonic distortion, dynamic performance, load balancing and mitigation of the voltage sag using MATLAB/Simulink.

      PubDate: 2017-11-10T09:14:03Z
      DOI: 10.1016/j.asej.2017.09.004
       
  • The importance of cultural dimensions in the design process of the
           vernacular societies

    • Authors: Gasser Gamil Abdel-Azim; Khaled Abdul-Aziz Osman
      Abstract: Publication date: Available online 6 November 2017
      Source:Ain Shams Engineering Journal
      Author(s): Gasser Gamil Abdel-Azim, Khaled Abdul-Aziz Osman
      Reviewing the thought of modernity and its impacts on architecture is based on the reconsideration of cultural differences among communities. It is an approach to remedy the consequences of applications of modern architectural theories in dealing with the vernacular societies. This research focuses on the significant role that cultural characteristics play in creating designs for such communities. Therefore, it represents the concept of considering patterns of events in the employment of the communal psychological dimension through the process of design. This research is divided into two phases: highlighting the various definitions of the key terms in the study, and analyzing the mechanism that considers the cultural characteristics of represented communities; Shibam in Yemen, Edfu in Upper Egypt, and Draa in Morocco. The main objective of the research is to use the vernacular prototypes and patterns to reach a design that is most culturally and environmentally adapted.

      PubDate: 2017-11-10T09:14:03Z
      DOI: 10.1016/j.asej.2017.09.005
       
  • Quantifying students' perception for deconstruction architecture

    • Authors: Yasmine Sabry Hegzi; Noura Anwar Abdel-Fatah
      Abstract: Publication date: Available online 3 November 2017
      Source:Ain Shams Engineering Journal
      Author(s): Yasmine Sabry Hegzi, Noura Anwar Abdel-Fatah
      Deconstruction in architecture is like a symbol of liberty. The French philosopher Jacques Derrida started the idea basically in language, and then his idea spread to reach architecture. Deconstruction move produced unique differentiated buildings, where difference was the main idea behind deconstruction. This actually made a deep debate, whether deconstruction was an out of the box philosophy or just a strange architectural composition. The research addressed that this kind of architecture needs complete architectural education to value the philosophy behind it, in addition to highlight how students of architecture in both (juniors level and seniors level), how they perceive deconstruction; an experimental approach was used to find out if the scientific material given in architectural theories about deconstruction may affect the perception levels of the students, these students joined the architectural program at faculty of engineering, Zagazig University, Egypt, and the experiment applied on selected pioneers of deconstruction famous buildings.

      PubDate: 2017-11-10T09:14:03Z
      DOI: 10.1016/j.asej.2017.09.006
       
  • Determining the Gestation Age through the automated measurement of the
           bi-parietal distance in fetal ultrasound images

    • Authors: Mariam Saii; Zaid Kraitem
      Abstract: Publication date: Available online 2 November 2017
      Source:Ain Shams Engineering Journal
      Author(s): Mariam Saii, Zaid Kraitem
      The proposed method has implemented series of steps. First the ratio of existing noise is reduced depending on Wiener Filter, followed by the stage of image borders removing in order to enrich high-density primary regions and suppress remaining ones. Thresholding stage has converted the image into a binary form, then the small foreground elements are removed in a binary image, after that the Skeletonization stage is applied in order to reduce the data points, then a matrix containing all data points which are lying on the target ellipse to be drawn. Detection of the ellipse corresponding to the limits of the fetus head in the input ultrasound image is done via the Least Square Fitting (LSF) algorithm, which returns the ellipse parameters including the minor axis which corresponds to the bi-parietal distance measure. The results of auto-measurements are compared with manual measurements of a specialist to improve the effective of the proposed method.

      PubDate: 2017-11-03T02:16:07Z
      DOI: 10.1016/j.asej.2017.08.008
       
  • Production cost development for commercial exhaust systems

    • Authors: Ahmad Abosrea; Waleed El-Sallamy; Tarek Osman; Tamer Elnady
      Abstract: Publication date: Available online 28 October 2017
      Source:Ain Shams Engineering Journal
      Author(s): Ahmad Abosrea, Waleed El-Sallamy, Tarek Osman, Tamer Elnady
      Muffling devices are essential parts of any vehicle/machine that uses internal combustion engines. From automotive manufacturers point of view, they contribute massive sheet metal processing and production time, especially mufflers that are produced at high rates for commercial vehicles. This paper is concerned with applying manufacturing procedures to reduce the production cost of any commercial automotive mufflers through theoretical studies and experimental measurements verification. Mufflers design parameters such as transmission loss, flow generated noise and pressure drop were selected for performance judgment, parameters were simulated and experimentally measured. The transfer matrix method was used to calculate the propagation of sound waves along the muffler. A commercial automotive muffler with a hybrid combination of dissipation and reflection was selected for application and a new design was proposed for this muffler with a reduced manufacturing cost. The manufacturing processes were reduced by 77.7% and consequently the cost relative to the original muffler.

      PubDate: 2017-11-03T02:16:07Z
      DOI: 10.1016/j.asej.2017.09.003
       
  • Harmonization between architectural identity and energy efficiency in
           residential sector (case of North-West coast of Egypt)

    • Authors: Reham El-Dessuky Hamed
      Abstract: Publication date: Available online 23 October 2017
      Source:Ain Shams Engineering Journal
      Author(s): Reham El-Dessuky Hamed
      Environmental design concept is a significant factor, regionally and locally. Architectural formation will be applied on the North-West coast of Egypt. The research keeps an eye on the relationship between architectural identity and energy efficiency of housing sector in Marsa Matrouh, where architecture identity has must be respected to achieving environmental requirements, conserving energy, and reaching users environmental and functional comfort. The purpose of this research is to promote environmental design concepts in residential sectors using building design tool such as Ecotect software; as a visual design modeling concerning with energy performance simulation.

      PubDate: 2017-10-25T16:22:07Z
      DOI: 10.1016/j.asej.2017.09.001
       
  • Effect of waste tyre rubber on mechanical and durability properties of
           concrete – A review

    • Authors: Sofi
      Abstract: Publication date: Available online 21 October 2017
      Source:Ain Shams Engineering Journal
      Author(s): A. Sofi
      Disposal of waste tyre rubber has become a major environmental issue in all parts of the world representing a very serious threat to the ecology. One of the possible solutions for the use of scrap tyre rubber is to incorporate it into concrete, to replace some of the natural aggregate. An estimated 1000 million tyres reach the end of their useful lives every year and 5000 millions more are expected to be discarded in a regular basis by the year 2030. Up to now a small part is recycled and millions of tyres are just stockpiled, landfilled or buried. The volume of polymeric wastes like tyre rubber and polyethylene terephthalate bottles (PET) is increasing at a fast rate. This paper reviews the tests performed to determine the compressive strength, flexural tensile strength, water absorption and water penetration of using rubber tyre waste concrete samples. Scanning Electron Microscopy (SEM) images were also presented in this paper. It was observed that the compressive strength, flexural tensile strength and depth of water penetration of the rubberized concrete were less than that of the control mix, while the abrasion resistance and water absorption (up to 10% substitution) exhibited better results than that of the control mix concrete. This paper also reviews the performance of concrete mixtures incorporating 5%, 7.5% and 10% of discarded tyre rubber as aggregate and cement replacements. Numerous projects have been conducted on replacement of aggregates by crumb rubbers but scarce data are found on cementitious filler addition. Hence to examine characteristics of tyre crumb-containing concrete, two sets of concrete specimens were made. In the first set, different percentages by weight of chipped rubber were replaced for coarse aggregates and in the second set scrap-tyre powder was replaced for cement. Selected standard durability and mechanical test were performed and the results were analysed.

      PubDate: 2017-10-25T16:22:07Z
       
  • Improving the performance of evacuated tube heat pipe collectors using oil
           and foamed metals

    • Authors: M.S. Abd-Elhady; M. Nasreldin; M.N. Elsheikh
      Abstract: Publication date: Available online 21 October 2017
      Source:Ain Shams Engineering Journal
      Author(s): M.S. Abd-Elhady, M. Nasreldin, M.N. Elsheikh
      The objective of this research is to improve the heating capability of evacuated tubes that comprises heat pipes. Thermal oil is inserted in the evacuated tube in order to improve the rate of heat transfer, such that the mode of heat transfer from the inner surface of the evacuated tube to the heat pipe becomes convection via the oil, as well as conduction through the installed fin. The finned surface has been replaced by a foamed-copper. An experimental setup has been developed to study the influence of oil and foamed metals on the performance of evacuated tubes with heat pipes. It has been found that the bulb temperature as well as the heating efficiency of the evacuated tube heat pipe has increased in case of inserting oil in the evacuated tube and replacing the finned surface with foamed copper. Also, the thermal oil acts as a heat storage.

      PubDate: 2017-10-25T16:22:07Z
      DOI: 10.1016/j.asej.2017.10.001
       
  • The role of nanotechnology in improving the efficiency of energy use with
           a special reference to glass treated with nanotechnology in office
           buildings

    • Authors: Ahmed Reda Abdin; Ashraf Roushdy El Bakery; Mahmoud Attiya Mohamed
      Abstract: Publication date: Available online 12 October 2017
      Source:Ain Shams Engineering Journal
      Author(s): Ahmed Reda Abdin, Ashraf Roushdy El Bakery, Mahmoud Attiya Mohamed
      The correct use of glass in office buildings plays a key role in the efficient use of energy especially with the application of nanotechnology. The main aim of this paper was to identify the capability of the different types of glass used in the building envelope to reduce energy consumption in office buildings. The chosen type will be combined with different Window to Wall Ratios (WWRs) and orientations to verify its efficiency. For this purpose, a simulation tool was used (Design Builder 3.1), then a comparison was done to test the performance of different types of glass and different orientations with the same glass thicknesses. The results are put into comparison in order to identify the best type of glass which can help in reducing the cost of energy consumption and how can it comply with the Egyptian energy code requirements for glass type which achieve energy efficiency. The results indicate that the use of glass treated with nanotechnology (Low-E) which have indices of (Solar Heat Gain Coefficient (SHGC)=0.23), (Light Transmission (LT)=0.42), (U Value (UV)=1.55) reduces energy consumption by more than 20% compared to the standard 6mm clear glass.

      PubDate: 2017-10-14T06:52:02Z
      DOI: 10.1016/j.asej.2017.07.001
       
  • Making conditionally negative definite radial basis function interpolation
           well-conditioned by adding cardinal basis functions

    • Authors: Saeed Kazem; Edmund A. Chadwick; Ali Hatam
      Abstract: Publication date: Available online 12 October 2017
      Source:Ain Shams Engineering Journal
      Author(s): Saeed Kazem, Edmund A. Chadwick, Ali Hatam
      A class of basis functions so called well-conditioned RBF (WRBFs) has been introduced. This basis has been manipulated by adding cardinal functions to the conditionally negative definite RBFs of order 1, such as Multiquadric functions 1 + ( ∊ r ) 2 (MQ) and log ( 1 + ( ∊ r ) 2 ) (LOG). The condition number of the interpolation matrix arising from this basis is of O ( N ) , where N is the number of center nodes. This order is independent of shape parameter and therefore applying this basis functions would recover the ill–posed linear system associated with the order 1 conditionally negative definite RBFs interpolation.

      PubDate: 2017-10-14T06:52:02Z
      DOI: 10.1016/j.asej.2017.03.013
       
  • Golden section search based maximum power point tracking strategy for a
           dual output DC-DC converter

    • Authors: R. Gayathri; G.A. Ezhilarasi
      Abstract: Publication date: Available online 12 September 2017
      Source:Ain Shams Engineering Journal
      Author(s): R. Gayathri, G.A. Ezhilarasi
      This paper introduces an Golden Section Search based algorithm, along with an single input multi output DC-DC converter for photovoltaic systems. In contemplation for photovoltaic (PV) systems to escalate their efficiency of power generation, it is mandatory to locate the Maximum power point (MPP) under all possible illumination conditions. Maximum power point tracking (MPPT) controller is expected to obtain the MPP irrespective of the device and climatic changes. The basic principle and the implementation of the system is elaborated in this paper, along with an comparison of different hill-climbing algorithms. The analytic and simulated results show that the new method has the advantages of fast convergence, noise-resistance, and robustness.

      PubDate: 2017-09-14T22:57:16Z
      DOI: 10.1016/j.asej.2017.04.008
       
  • Parameterless earth fault locator algorithm based on transient surges
           resulting from single-pole breaker opening

    • Authors: Eman S. Ahmed
      Abstract: Publication date: Available online 12 September 2017
      Source:Ain Shams Engineering Journal
      Author(s): Eman S. Ahmed
      This paper proposes a novel concept for ground faults locating on the basis of the traveling waves principles for EHV transmission systems. The transient surges generated due to single-pole breaker opening are localized in order to determine the accurate fault distance on the basis of single-end measurements. The proposed fault location concept is independent of the propagation speed. Also, the proposed strategy of creating traveling surges is exploited with synchronized double-end measurements. Time extraction of traveling surges is performed using the second derivative of the aerial mode voltage after breaker pole opening. The proposed algorithm is evaluated using transmission systems of multiple terminals. The results provide evidence the efficacy of the proposed fault location mechanism.

      PubDate: 2017-09-14T22:57:16Z
      DOI: 10.1016/j.asej.2017.08.002
       
  • Estimating the future energy efficiency and CO2 emissions of passive
           country housing applying domestic biogas reactor: A case study in Egypt

    • Authors: Mohammad Fahmy; Mohamed M. Mahdy; Hosam Rizk; Marwa F. Abdelaleem
      Abstract: Publication date: Available online 9 September 2017
      Source:Ain Shams Engineering Journal
      Author(s): Mohammad Fahmy, Mohamed M. Mahdy, Hosam Rizk, Marwa F. Abdelaleem
      This paper investigates the role of passive design strategies and using biogas in reducing energy consumption, annual energy cost and CO2 emissions of a new productive country housing model in an ongoing sustainable community development project near Cairo, Egypt. The country housing character follows the vernacular architecture of such hot arid areas through the application of courtyards, vaults and domes with two different materials for the building envelop. The traditional 25cm red bricks were used in the first case, whilst the second sustainable one is a prefabricated sandwich panel construction of 15cm GRC walls. The opportunity of using 2m3 biogas reactors is promising in such housing projects that have an area for raising domestic animals along with the waste supplies from each house agriculture zone. Design Builder simulations took place in present and future showed considerable reductions of energy consumption, annual energy cost and CO2 emissions estimations in the sustainable option with the biogas passive house.

      PubDate: 2017-09-14T22:57:16Z
      DOI: 10.1016/j.asej.2017.08.004
       
  • Effect of soil-foundation-structure interaction on the seismic response of
           wind turbines

    • Authors: Sam Austin; Sukhvarsh Jerath
      Abstract: Publication date: Available online 14 July 2017
      Source:Ain Shams Engineering Journal
      Author(s): Sam Austin, Sukhvarsh Jerath
      Soil-foundation-structure interaction can affect the seismic response of wind turbines. This paper studies the effects of soil-foundation-structure interaction on the seismic response of 65kW, 1MW, and 2MW horizontal-axis wind turbines with truncated cone steel towers. Four types of foundations with frequency-based design were analyzed, including spread foundation, mono pile, pile group with cap, and anchored spread foundation. Soil is modeled both implicitly (subgrade reaction modulus) and explicitly. The finite element model developed using the ANSYS program was first validated using experimental data. Numerical models are then analyzed in both frequency and time domains using the Block Lanczos and generalized HHT-α formulations. Recommendations were given to simplify the soil-foundation-structure interaction analysis of wind turbines subjected to seismic loading.

      PubDate: 2017-07-24T00:31:35Z
      DOI: 10.1016/j.asej.2017.05.007
       
 
 
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