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  Subjects -> ENGINEERING (Total: 2417 journals)
    - CHEMICAL ENGINEERING (207 journals)
    - CIVIL ENGINEERING (202 journals)
    - ELECTRICAL ENGINEERING (111 journals)
    - ENGINEERING (1267 journals)
    - ENGINEERING MECHANICS AND MATERIALS (400 journals)
    - HYDRAULIC ENGINEERING (56 journals)
    - INDUSTRIAL ENGINEERING (76 journals)
    - MECHANICAL ENGINEERING (98 journals)

ENGINEERING (1267 journals)                  1 2 3 4 5 6 7 | Last

Showing 1 - 200 of 1205 Journals sorted alphabetically
3 Biotech     Open Access   (Followers: 8)
3D Research     Hybrid Journal   (Followers: 21)
AAPG Bulletin     Hybrid Journal   (Followers: 8)
AASRI Procedia     Open Access   (Followers: 14)
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: 273)
Acta Geotechnica     Hybrid Journal   (Followers: 7)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 7)
Acta Polytechnica : Journal of Advanced Engineering     Open Access   (Followers: 3)
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: 7)
Advanced Journal of Graduate Research     Open Access  
Advanced Science     Open Access   (Followers: 5)
Advanced Science Focus     Free   (Followers: 5)
Advanced Science Letters     Full-text available via subscription   (Followers: 10)
Advanced Science, Engineering and Medicine     Partially Free   (Followers: 7)
Advanced Synthesis & Catalysis     Hybrid Journal   (Followers: 18)
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: 27)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 17)
Advances in Fuzzy Systems     Open Access   (Followers: 5)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 13)
Advances in Heat Transfer     Full-text available via subscription   (Followers: 21)
Advances in Human Factors/Ergonomics     Full-text available via subscription   (Followers: 22)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 9)
Advances in Natural Sciences: Nanoscience and Nanotechnology     Open Access   (Followers: 29)
Advances in Operations Research     Open Access   (Followers: 12)
Advances in OptoElectronics     Open Access   (Followers: 6)
Advances in Physics Theories and Applications     Open Access   (Followers: 13)
Advances in Polymer Science     Hybrid Journal   (Followers: 43)
Advances in Porous Media     Full-text available via subscription   (Followers: 5)
Advances in Remote Sensing     Open Access   (Followers: 44)
Advances in Science and Research (ASR)     Open Access   (Followers: 6)
Aerobiologia     Hybrid Journal   (Followers: 3)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 6)
AIChE Journal     Hybrid Journal   (Followers: 35)
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: 26)
American Journal of Engineering and Applied Sciences     Open Access   (Followers: 10)
American Journal of Engineering Education     Open Access   (Followers: 9)
American Journal of Environmental Engineering     Open Access   (Followers: 16)
American Journal of Industrial and Business Management     Open Access   (Followers: 24)
Analele Universitatii Ovidius Constanta - Seria Chimie     Open Access  
Annals of Combinatorics     Hybrid Journal   (Followers: 4)
Annals of Pure and Applied Logic     Open Access   (Followers: 2)
Annals of Regional Science     Hybrid Journal   (Followers: 7)
Annals of Science     Hybrid Journal   (Followers: 7)
Antarctic Science     Hybrid Journal   (Followers: 1)
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: 6)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 11)
Applied Magnetic Resonance     Hybrid Journal   (Followers: 4)
Applied Nanoscience     Open Access   (Followers: 8)
Applied Network Science     Open Access   (Followers: 3)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Physics Research     Open Access   (Followers: 5)
Applied Sciences     Open Access   (Followers: 3)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 4)
Arabian Journal for Science and Engineering     Hybrid Journal   (Followers: 5)
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 5)
Archives of Foundry Engineering     Open Access  
Archives of Thermodynamics     Open Access   (Followers: 8)
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: 28)
Beni-Suef University Journal of Basic and Applied Sciences     Open Access   (Followers: 4)
BER : Manufacturing Survey : Full Survey     Full-text available via subscription   (Followers: 1)
BER : Motor Trade Survey     Full-text available via subscription  
BER : Retail Sector Survey     Full-text available via subscription   (Followers: 1)
BER : Retail Survey : Full Survey     Full-text available via subscription   (Followers: 1)
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: 3)
Beyond : Undergraduate Research Journal     Open Access  
Bhakti Persada : Jurnal Aplikasi IPTEKS     Open Access  
Bharatiya Vaigyanik evam Audyogik Anusandhan Patrika (BVAAP)     Open Access   (Followers: 1)
Bilge International Journal of Science and Technology Research     Open Access  
Biofuels Engineering     Open Access   (Followers: 1)
Biointerphases     Open Access   (Followers: 1)
Biomaterials Science     Full-text available via subscription   (Followers: 11)
Biomedical Engineering     Hybrid Journal   (Followers: 15)
Biomedical Engineering and Computational Biology     Open Access   (Followers: 13)
Biomedical Engineering Letters     Hybrid Journal   (Followers: 5)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 21)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 37)
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   (Followers: 1)
Biomicrofluidics     Open Access   (Followers: 4)
BioNanoMaterials     Hybrid Journal   (Followers: 2)
Biotechnology Progress     Hybrid Journal   (Followers: 39)
Bitlis Eren University Journal of Science and Technology     Open Access  
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: 12)
Bulletin of Canadian Petroleum Geology     Full-text available via subscription   (Followers: 13)
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   (Followers: 2)
Canadian Geotechnical Journal     Hybrid Journal   (Followers: 31)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 42)
Case Studies in Engineering Failure Analysis     Open Access   (Followers: 6)
Case Studies in Thermal Engineering     Open Access   (Followers: 5)
Catalysis Communications     Hybrid Journal   (Followers: 6)
Catalysis Letters     Hybrid Journal   (Followers: 2)
Catalysis Reviews: Science and Engineering     Hybrid Journal   (Followers: 7)
Catalysis Science and Technology     Free   (Followers: 8)
Catalysis Surveys from Asia     Hybrid Journal   (Followers: 3)
Catalysis Today     Hybrid Journal   (Followers: 7)
CEAS Space Journal     Hybrid Journal   (Followers: 2)
Cellular and Molecular Neurobiology     Hybrid Journal   (Followers: 3)
Central European Journal of Engineering     Hybrid Journal  
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: 3)
CienciaUAT     Open Access   (Followers: 1)
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: 13)
City, Culture and Society     Hybrid Journal   (Followers: 21)
Clay Minerals     Full-text available via subscription   (Followers: 10)
Clean Air Journal     Full-text available via subscription   (Followers: 1)
Clinical Science     Full-text available via subscription   (Followers: 9)
Coal Science and Technology     Full-text available via subscription   (Followers: 3)
Coastal Engineering     Hybrid Journal   (Followers: 11)
Coastal Engineering Journal     Hybrid Journal   (Followers: 6)
Coatings     Open Access   (Followers: 4)
Cogent Engineering     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 4)
Color Research & Application     Hybrid Journal   (Followers: 2)
COMBINATORICA     Hybrid Journal  
Combustion Theory and Modelling     Hybrid Journal   (Followers: 14)
Combustion, Explosion, and Shock Waves     Hybrid Journal   (Followers: 14)
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: 28)
Composite Interfaces     Hybrid Journal   (Followers: 7)
Composite Structures     Hybrid Journal   (Followers: 278)
Composites Part A : Applied Science and Manufacturing     Hybrid Journal   (Followers: 209)
Composites Part B : Engineering     Hybrid Journal   (Followers: 250)
Composites Science and Technology     Hybrid Journal   (Followers: 193)
Comptes Rendus Mécanique     Full-text available via subscription   (Followers: 2)
Computation     Open Access   (Followers: 1)
Computational Geosciences     Hybrid Journal   (Followers: 16)
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: 31)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 8)
Computers and Electronics in Agriculture     Hybrid Journal   (Followers: 5)
Computers and Geotechnics     Hybrid Journal   (Followers: 11)
Computing and Visualization in Science     Hybrid Journal   (Followers: 7)
Computing in Science & Engineering     Full-text available via subscription   (Followers: 33)
Conciencia Tecnologica     Open Access  
Concurrent Engineering     Hybrid Journal   (Followers: 3)
Continuum Mechanics and Thermodynamics     Hybrid Journal   (Followers: 8)

        1 2 3 4 5 6 7 | Last

Journal Cover
Combustion, Explosion, and Shock Waves
Journal Prestige (SJR): 0.294
Citation Impact (citeScore): 1
Number of Followers: 14  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0010-5082 - ISSN (Online) 1573-8345
Published by Springer-Verlag Homepage  [2350 journals]
  • Regimes of Unstable Expansion and Diffusion Combustion of a Hydrocarbon
           Fuel Jet
    • Authors: V. V. Lemanov; V. V. Lukashov; R. Kh. Abdrakhmanov; V. A. Arbuzov; Yu. N. Dubnishchev; K. A. Sharov
      Pages: 255 - 263
      Abstract: Results of an experimental study of hydrodynamics and diffusion combustion of hydrocarbon jets are presented. Various regimes of instability development both in the jet flame proper and inside the source of the fuel jet are considered. The experiments are performed for the case of subsonic gas jet expansion into the air from a long tube 3.2 mm in diameter in the range of Reynolds numbers from 200 to 13 500. The fuel is the propane–butane mixture in experiments with a cold jet (without combustion) and pure propane or propane mixed with an inert dilutant (CO2 or He) for the jet flame. The mean velocity and velocity fluctuations in the near field of the jet without combustion are measured. Among four possible regimes of cold jet expansion (dissipative, laminar, transitional, and turbulent), three last regimes are investigated. The Hilbert visualization of the reacting flow is performed. The temperature profiles in the near field of the jet are measured by a Pt/Pt–Rh thermocouple. An attached laminar flame is observed in the transitional regime of propane jet expansion from the tube. In the case of combustion of C3H8 mixtures with CO2 or with He in the range of Reynolds numbers from 1900 to 3500, the transitional regime is detected in the lifted flame. Turbulent spots formed in the tube in the transitional regime exert a significant effect on the flame front position: they can either initiate a transition to a turbulent flame or lead to its laminarization.
      PubDate: 2018-05-01
      DOI: 10.1134/s0010508218030012
      Issue No: Vol. 54, No. 3 (2018)
       
  • Experimental Investigation of the Ignition of Combustible Gas Mixtures by
           Friction Sparks
    • Authors: A. Yu. Shebeko; Yu. N. Shebeko; A. V. Zuban; N. V. Golov
      Pages: 264 - 274
      Abstract: This paper presents a method of testing structural materials for spark safety and the results of testing this method for several pairs of materials and samples of combustible gases and vapors. Hydrogen, acetylene, AI-92 gasoline vapor, methane and liquefied petroleum gas were used as combustible gases and vapor, and samples of various types of steel, aluminum, and brass as structural materials.
      PubDate: 2018-05-01
      DOI: 10.1134/s0010508218030024
      Issue No: Vol. 54, No. 3 (2018)
       
  • Classification of Similarity Criteria in Combustion Theory and the Problem
           of Autoignition of a Combustible Mixture by Compression
    • Authors: V. S. Babkin; P. K. Senachin
      Pages: 275 - 283
      Abstract: The dynamic problems of the theory of combustion and explosion are classified from the point of view of competition of the characteristic times of bulk chemical reaction, frontal combustion, heat transfer, gas flow from the vessel, compression (motion of the piston), and heating (cooling) rate. We consider dynamic similarity criteria such as the ratio of the characteristic times in problems of classical thermal explosion, dynamic thermal explosion, flammability limits, combustion in communicating vessels, competition of frontal and volumetric combustion, autoignition by adiabatic compression, competition of frontal combustion and piston motion, as well as compound similarity criteria (such as functions of simple dynamic similarity criteria). The problem of autoignition of a mixture by compression is considered, and a method for obtaining an analytical solution of the problem and an algorithm for the approximate solution based on a special differential criterion are proposed.
      PubDate: 2018-05-01
      DOI: 10.1134/s0010508218030036
      Issue No: Vol. 54, No. 3 (2018)
       
  • Natural Buoyant Turbulent Diffusion Flame near a Vertical Surface
    • Authors: E. S. Markus; E. A. Kuznetsov; A. Yu. Snegirev
      Pages: 284 - 293
      Abstract: The structure and dynamics of a natural buoyant turbulent diffusion flame near a vertical surface with combustible gas exhaustion are numerically studied by using the FDS model and computer code. The flame is considered near the surface through which gaseous propylene is injected with a prescribed flow rate. Requirements are determined for the grid cell size in the near-wall region, which ensure sufficient spatial resolution of the boundary layer structure. It is shown that the predicted value of the total heat flux at the surface agrees with the measured results. Investigations of ignition and combustion of a vertical plate of non-charring thermoplastic (polymethylmetacrylate) with allowance for the material pyrolysis reaction show that the ignitor parameters determine the duration of the transient period, but weakly affect the growth of the heat release rate and the height of the pyrolysis region at the stage of developed burning. Significant effects of the ignitor shape, size, and temperature, as well as lateral entrainment of air on the velocity of the upward flame spread rate over the plate surface and on the shape of the pyrolysis front are revealed. The existence of critical parameters of the ignitor separating flame decay from developed burning is demonstrated. Three flame spread regimes with different pyrolysis front shapes are identified.
      PubDate: 2018-05-01
      DOI: 10.1134/s0010508218030048
      Issue No: Vol. 54, No. 3 (2018)
       
  • Spatial Structure of a Reacting Turbulent Swirling Jet Flow with
           Combustion of a Propane–Air Mixture
    • Authors: D. K. Sharaborin; D. M. Markovich; V. M. Dulin
      Pages: 294 - 300
      Abstract: Results of an experimental study of the spatial structure of a reacting flow during combustion of a propane–air mixture in a turbulent swirling jet escaping into atmospheric air are presented. The fuel-to-air equivalence ratio is φ = 0.7, and the Reynolds number of the jet is Re = 5 · 103. The time-averaged spatial distributions of velocity, local density, and concentrations of the main species of the gas mixture are measured in low-swirl and high-swirl flows. In both cases, the flame front is stabilized in the internal mixing layer formed by the axial region of jet retardation, where hot combustion products are concentrated. In a high-swirl flow, the temperature distributions in the cross section y/d = 0.5 show that the region with the maximum temperature of the gas is located at the periphery of the central recirculation zone. Moreover, in the case of a high-swirl flow, there exists a recirculation zone at the axis, and the CO2 concentration is twice higher than in a low-swirl jet. The opposite situation is observed for O2.
      PubDate: 2018-05-01
      DOI: 10.1134/s001050821803005x
      Issue No: Vol. 54, No. 3 (2018)
       
  • Simulation of Characteristics of Condensed Products in a Combustion
           Chamber
    • Authors: V. A. Babuk; N. L. Budnyi; A. N. Ivonenko; A. A. Nizyaev
      Pages: 301 - 308
      Abstract: The principles of computational determination of the characteristics of both coarse and fine fractions of condensed combustion products formed at the propellant surface and evolving as part of the multiphase flow in the combustion chamber. The characteristics of condensed products at the propellant surface are determined by modeling the processes involved in their formation using a decision-making system based on an expert system approach. An evolution model for non-one-dimensional flow with the mutual influence of the characteristics of condensed and gaseous combustion products is developed to determine the characteristics of condensed products in the multiphase flow of combustion products. The developed tools allow the characteristics of condensed products to be determined depending on the propellant composition, characteristics of the propellant grain, and combustion chamber parameters. Parametric analysis of the developed models was performed for combustion chamber conditions.
      PubDate: 2018-05-01
      DOI: 10.1134/s0010508218030061
      Issue No: Vol. 54, No. 3 (2018)
       
  • Experimental Study on Pyrolysis of Black Non-Charring Polymers in the
           Reduced-Pressure Environment
    • Authors: R. Zong; R. Kang; Y. Zhi; C. Liu
      Pages: 309 - 315
      Abstract: A series of experiments on a black non-charring polymer in the low-pressure chamber is conducted under different external heat fluxes. The surface and bottom temperatures and the mass loss of the sample are measured. A parameter T p is introduced to describe the impact of pressure on the surface temperature. There is a loose layer of the char residue left with significant pyrolysis bubbles under the low heat flux, and the bubble size decreases with pressure. The parameter T p is found to exhibit a significant decline trend with increasing pressure, and the mass loss rate of the sample decreases apparently as the pressure increases. However, under a high heat flux, the char residue is denser, and the pyrolysis bubbles are not observed. The value of T p and the mass loss rate of the sample have no obvious relationship with pressure. The average pyrolysis rate is linearly proportional to p a .
      PubDate: 2018-05-01
      DOI: 10.1134/s0010508218030073
      Issue No: Vol. 54, No. 3 (2018)
       
  • Influence of Activated Carbon on the Thermal Decomposition of
           Hydroxylammonium Nitrate
    • Authors: M. K. Atamanov; R. Amrousse; K. Hori; B. Ya. Kolesnikov; Z. A. Mansurov
      Pages: 316 - 324
      Abstract: This paper presents experimental results for the thermal decomposition of hydroxylammonium nitrate (HAN) in the presence of activated carbon with a high specific surface (up to 3000 m2/g) obtained by activation of rice husk with potassium hydroxide at a temperature of 700°C in a rotating spherical furnace. The addition of activated carbon reduces the temperature of the onset of decomposition of HAN from 185 to 86 ± 0.5°C. The burning rate of HAN doped with activated carbon increases to 400 mm/s at an overpressure of 6 MPa. It has been shown that the addition of activated carbon reduces the amount of NO x gases produced by decomposition to 30%.
      PubDate: 2018-05-01
      DOI: 10.1134/s0010508218030085
      Issue No: Vol. 54, No. 3 (2018)
       
  • Ignition of Particles of Wet Woody Biomass under Convective Diffusion of
           Water Vapor in the Near-Wall Region
    • Authors: G. V. Kuznetsov; V. V. Salomatov; S. V. Syrodoy
      Pages: 325 - 336
      Abstract: This paper presents the results of an experimental and theoretical study of heat and mass transfer during ignition of wet wood particles in a high-temperature gas medium. Experiments were carried out in a setup which provides conditions similar to the combustion spaces of boiler units. The main heat transfer parameters (ambient temperature) and integrated ignition characteristics (ignition delay) were measured. The measurement error of these parameters did not exceed 18%. The convective transfer of water vapor formed during evaporation of pore moisture and pyrolysis products were found to have an insignificant effect on the ignition characteristics and conditions. From the results of the experiments, a mathematical model of the ignition process was developed which describes the simultaneous occurrence of the main processes of thermal preparation under conditions of intense phase (evaporation of water) and thermochemical transformations (thermal decomposition of the organic part of the fuel, thermochemical interaction between water vapor and carbon coke, ignition of volatiles) taking into account the convective diffusion of water vapor and pyrolysis products in the near-wall gas area during the induction period. The theoretical ignition delay is in satisfactory (within the confidence interval) agreement with the experimental value. The numerical model of the diffusion flame adequately (good agreement between experimental and theoretical ignition delays) describes the ignition of a wet wood particle.
      PubDate: 2018-05-01
      DOI: 10.1134/s0010508218030097
      Issue No: Vol. 54, No. 3 (2018)
       
  • Modernization of Air-Blown Entrained-Flow Gasifier of Integrated
           Gasification Combined Cycle Plant
    • Authors: A. F. Ryzhkov; N. A. Abaimov; I. G. Donskoi; D. A. Svishchev
      Pages: 337 - 344
      Abstract: The high efficiency of a combined cycle and the availability of systems for deep purification of syngas before combustion allow for the study of combined-cycle gas turbines as a promising solution to increase the efficiency and environmental friendliness of coal power engineering. The key element of the device is a gasifier. A Mitsubishi Heavy Industries gasifier is selected as an initial design for modernization, which consists in heating the blast air up to 900°C and supplying vapor with a temperature of 900°C. The impact of modernizing the gasifier characteristics is determined by using zero-, one-, and three-dimensional models. The modernization of the gasifier allows increasing the thermal power by the syngas and cold gas efficiency from 77.2 to 84.9% and increasing the ratio H2/CO from 0.34 to 0.6.
      PubDate: 2018-05-01
      DOI: 10.1134/s0010508218030103
      Issue No: Vol. 54, No. 3 (2018)
       
  • On the Theory of Ignition, Combustion, and Detonation of Micro- and
           Nanoparticles
    • Authors: A. V. Fedorov
      Pages: 345 - 349
      Abstract: A review of some investigations performed in the field of mechanics of reacting heterogeneous media with micro- and nanostructures at the Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences is presented. Some new results are also reported.
      PubDate: 2018-05-01
      DOI: 10.1134/s0010508218030115
      Issue No: Vol. 54, No. 3 (2018)
       
  • Study of Ignition of High-Energy Materials with Boron and Aluminum and
           Titanium Diborides
    • Authors: A. G. Korotkikh; V. A. Arkhipov; K. V. Slyusarsky; I. V. Sorokin
      Pages: 350 - 356
      Abstract: This paper describes the ignition of high-energy materials (HEMs) on the basis of ammonium perchlorate and ammonium nitrate and an energetic binder, containing the powders of Al (base composition), B, AlB2, AlB12, and TiB2, upon initiation of the process by a CO2 laser in the heat flux density range of 90–200 W/cm2. The ignition delay time and surface temperature of the reaction layer during the heating and ignition of HEMs in air are determined. It is obtained that the complete replacement of a micron-sized aluminum powder by amorphous boron in the composition of HEMs significantly reduces the ignition delay time of the sample (by 2.2–2.8 times) with the same heat flux density, and this occurs due to the high chemical activity of and difference between the mechanisms of oxidation of boron particles. The use of aluminum diboride in HEMs reduces the ignition delay time by 1.7–2.2 times in comparison with the base composition. The ignition delay time of the HEM sample with titanium diboride decreases slightly (by 10–25%) relative to the ignition delay time of the base composition.
      PubDate: 2018-05-01
      DOI: 10.1134/s0010508218030127
      Issue No: Vol. 54, No. 3 (2018)
       
  • Continuous Detonation Combustion of Hydrogen: Results of Wind Tunnel
           Experiments
    • Authors: S. M. Frolov; V. I. Zvegintsev; V. S. Ivanov; V. S. Aksenov; I. O. Shamshin; D. A. Vnuchkov; D. G. Nalivaichenko; A. A. Berlin; V. M. Fomin
      Pages: 357 - 363
      Abstract: Combustion tests of a ramjet model 1.05 m long and 0.31 m in diameter with an expanding annular combustor operating in the regime of detonation combustion of hydrogen are described. The tests are performed in a short-duration wind tunnel at free-stream Mach numbers of the incoming air flow from 5 to 8 and stagnation temperature of 290 K. Continuous detonation and longitudinally pulsating regimes of hydrogen combustion with characteristic frequencies of 1250 and 900 Hz, respectively, are observed. The maximum measured values of the fuel-based specific impulse and the thrust generated by the engine are 3600 s and 2200 N, respectively.
      PubDate: 2018-05-01
      DOI: 10.1134/s0010508218030139
      Issue No: Vol. 54, No. 3 (2018)
       
  • Triggering Detonation in an Annular Flow Chamber
    • Authors: D. V. Voronin
      Pages: 364 - 369
      Abstract: The Navier–Stokes equations were used to carry out the numerical modeling of chemically reactive gas flow in an annular flow chamber. The model was based on laws of conservation of mass, momentum, and energy for nonstationary two-dimensional compressible gas flow in the case of axial symmetry with a tangential component of the gas velocity. Viscosity, thermal conductivity, and turbulence were taken into account. Fuel and oxidizer were fed into the chamber separately, and heat release in the chemical reaction zone was largely determined by the rate of turbulent mixing of the gas components. The possibility of burning out of the mixture in the chamber was demonstrated numerically. Detonation failure can occur if reagents temporarily cease to be fed into the chamber, which can be caused by high pressure in the reaction zone. With short combustion chamber lengths, there are the underburning of fuel and the release of unreacted hydrogen into the atmosphere.
      PubDate: 2018-05-01
      DOI: 10.1134/s0010508218030140
      Issue No: Vol. 54, No. 3 (2018)
       
  • Low-NO x Firing Systems with Swirl Burners Installed on Boilers PK-39-IIM
           and BKZ-420-140-5
    • Authors: N. S. Marishin; F. A. Serant; A. I. Tsepenok; A. A. Lavrinenko; O. I. Stavskaya
      Pages: 370 - 375
      Abstract: The paper presents basic technical solutions for the firing system and design of the burners of boilers PK-39-IIM and BKZ-420-140-5 when firing Ekibastuz coal. The developed low-NO x firing systems ensure low nitrogen oxide emissions both at low cross-section heat release rates and high furnace cross-section heat release rates. Technical solutions developed for the firing systems are based on the simulation of coal combustion in furnaces of the mentioned boilers using ANSYS Fluent software.
      PubDate: 2018-05-01
      DOI: 10.1134/s0010508218030152
      Issue No: Vol. 54, No. 3 (2018)
       
  • Ignition of Fuel Slurries Based on Waste Products of Coal Processing and
           Oil Refining
    • Authors: K. Yu. Vershinina; S. Yu. Lyrshchikov; P. A. Strizhak
      Pages: 376 - 384
      Abstract: Results of an experimental study of conditions and characteristics of ignition of fuel slurries prepared on the basis of typical waste products of coal washing and oil refining are reported. The main attention is paid to analyzing the differences in the characteristics and conditions of ignition of organic coal–water slurries prepared on the basis of coal washing waste products (nonbaking, coking, low-caking, fat, gas, and flame coals are considered). The ignition delay time and the minimum (threshold) temperature of ignition of the examined slurries are estimated. Conclusions on the influence of the properties and concentrations of the slurry components on the combustion initiation characteristics are formulated.
      PubDate: 2018-05-01
      DOI: 10.1134/s0010508218030164
      Issue No: Vol. 54, No. 3 (2018)
       
  • Estimation of the Maximum Efficiency of a Heat Recovery Burner
    • Authors: I. A. Terletskii
      Pages: 16 - 19
      Abstract: Estimates are obtained for the maximum efficiency of a system consisting of a heat recovery burner connected to an ideal Carnot heat engine. The burner serves as a heater of the ideal heat engine, and the cold side is at the ambient temperature. Combustion products heat the hot wall of the ideal engine and then transfer heat to the combustible mixture supplied to the combustion chamber. Recovery of the heat of the combustible mixture occurs through the heat-conducting wall of a countercurrent heat exchanger, in which the combustion products and the combustible mixture move toward each other in the channels connected by a heat-conducting partition. An estimate is obtained for the total efficiency of the system, which is defined as the ratio of the net power of the ideal engine to the chemical energy flux reaching the burner device. It is shown that the total efficiency of the system can approach the Carnot-cycle efficiency with the maximum possible temperature of the hot side of the ideal heat engine.
      PubDate: 2018-01-01
      DOI: 10.1134/s0010508218010033
      Issue No: Vol. 54, No. 1 (2018)
       
  • Deactivation of Mechanically Activated Micronized Coal
    • Authors: A. P. Burdukov; E. B. Butakov; A. V. Kuznetsov; M. Yu. Chernetskiy
      Pages: 20 - 23
      Abstract: This paper describes the study of the effect of mechanically activated grinding of coal on its flammability. Coal treated in a ball pulverizer and mechanically activated coal exposed to air are compared in experiments. The experiments show a decrease in the chemical activity of mechanically activated coal.
      PubDate: 2018-01-01
      DOI: 10.1134/s0010508218010045
      Issue No: Vol. 54, No. 1 (2018)
       
  • Mathematical Modeling of the Combustion of an Overfueled Aluminum–Air
           Mixture Based on the Nonequilibrium Thermodynamics of the Process
    • Authors: A. Yu. Kryukov; V. I. Malinin
      Pages: 35 - 46
      Abstract: This paper presents the results of mathematical modeling of the combustion of flow of a multifractional suspension of an aluminum powder in air taking into account the nonequilibrium nature of the process. The calculations were performed for air-to-fuel ratios α = 0.1–0.5. Time dependences of thermodynamic parameters, the completeness of metal particle combustion, and the relative residence time of the fractions in the flow were obtained. The adequacy of the nonequilibrium model for describing thermodynamic processes was validated by comparing with the equilibrium model for time tending to ∞. The necessity of taking into account the formation of Al2O suboxide present in the range of the air-to-fuel ratio is analyzed and proved. The need to include nitriding reactions in the mathematical modeling for 0.1 ≤ α < 0.4 is shown by comparing the results of calculations based on equilibrium and nonequilibrium thermodynamics.
      PubDate: 2018-01-01
      DOI: 10.1134/s0010508218010070
      Issue No: Vol. 54, No. 1 (2018)
       
  • Investigation of Nickel Aluminide Formed Due to Shock Loading of
           Aluminum–Nickel Mixtures in Flat Recovery Ampoules
    • Authors: A. N. Zhukov; V. A. Yakushev; S. Yu. Ananev; V. V. Dobrygin; A. Yu. Dolgoborodov
      Pages: 64 - 71
      Abstract: Detailed results of an x-ray diffraction analysis of equimolar mixtures of nickel and aluminum with different particle sizes before and after shock loading in flat recovery ampoules are reported.
      PubDate: 2018-01-01
      DOI: 10.1134/s0010508218010100
      Issue No: Vol. 54, No. 1 (2018)
       
 
 
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