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  Subjects -> ENGINEERING (Total: 2358 journals)
    - CHEMICAL ENGINEERING (201 journals)
    - CIVIL ENGINEERING (192 journals)
    - ELECTRICAL ENGINEERING (107 journals)
    - ENGINEERING (1240 journals)
    - ENGINEERING MECHANICS AND MATERIALS (394 journals)
    - HYDRAULIC ENGINEERING (56 journals)
    - INDUSTRIAL ENGINEERING (72 journals)
    - MECHANICAL ENGINEERING (96 journals)

ENGINEERING (1240 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: 20)
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: 268)
Acta Geotechnica     Hybrid Journal   (Followers: 7)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 6)
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 Science     Open Access   (Followers: 5)
Advanced Science Focus     Free   (Followers: 5)
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: 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: 6)
Advances in Engineering Software     Hybrid Journal   (Followers: 27)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 15)
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: 23)
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: 5)
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: 43)
Advances in Science and Research (ASR)     Open Access   (Followers: 4)
Aerobiologia     Hybrid Journal   (Followers: 2)
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: 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: 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: 5)
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: 26)
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: 2)
BER : Survey of Business Conditions in Retail : An Executive Summary     Full-text available via subscription   (Followers: 3)
Bhakti Persada : Jurnal Aplikasi IPTEKS     Open Access  
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: 13)
Biomedical Engineering Letters     Hybrid Journal   (Followers: 5)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 19)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 35)
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: 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  
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  
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: 2)
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: 20)
Clay Minerals     Full-text available via subscription   (Followers: 10)
Clean Air Journal     Full-text available via subscription   (Followers: 1)
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: 2)
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: 28)
Composite Interfaces     Hybrid Journal   (Followers: 7)
Composite Structures     Hybrid Journal   (Followers: 274)
Composites Part A : Applied Science and Manufacturing     Hybrid Journal   (Followers: 212)
Composites Part B : Engineering     Hybrid Journal   (Followers: 246)
Composites Science and Technology     Hybrid Journal   (Followers: 184)
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: 30)
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: 6)
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)
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)

        1 2 3 4 5 6 7 | Last

Journal Cover Combustion, Explosion, and Shock Waves
  [SJR: 0.348]   [H-I: 28]   [13 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 0010-5082 - ISSN (Online) 1573-8345
   Published by Springer-Verlag Homepage  [2349 journals]
  • Experimental Study of a Cellular Ethanol Flame Evaporating “On the
           Ceiling”
    • Authors: R. Kh. Abdrakhmanov; B. F. Boyarshinov
      Pages: 1 - 8
      Abstract: This paper describes the study of evaporation and combustion of ethanol under a horizontal wall in a stratified shear gas layer in the case of the Rayleigh–Taylor instability. Data on the nature of flow are obtained with the use of particle image velocimetry (PIV), and temperature profiles are recorded by a thermocouple. It is shown that cells are formed in a narrow range of air velocity of 0.6 ± 0.05 m/s and does not depend on the height of the obstacle (backward ledge or an edge is 0–7 mm in height). The flow between the wall and flame front is an alternation of mushroom-shaped structures moving from one wall to another. In the cellular flame, the flow of substance (with respect to the air flow) exceeds its level in a standard laminar boundary layer three times. The averaged transverse velocity is directed away from the wall in the boundary layer with combustion without cells, and it is reduced and directed toward the wall in the cellular flame between the wall and flame front.
      PubDate: 2018-01-01
      DOI: 10.1134/s001050821801001x
      Issue No: Vol. 54, No. 1 (2018)
       
  • Quantum-Chemical Calculations of the Primary Reactions of Thermal
           Decomposition of Cyclopentadienone
    • Authors: A. R. Ghildina; A. M. Mebel; I. A. Medvedkov; V. N. Azyazov
      Pages: 9 - 15
      Abstract: The geometric structures, vibration frequencies, and energies of the reactants, products, and transition states in the decomposition of C5H4O were evaluated by quantum chemical calculations using the CCSD(T)-F12/vtz-f12B method. The calculated energy barriers for the two most probable pyrolysis pathways of C5H4O, equal to 96.3 and 96.5 kcal/mol, respectively, are evidence that the pyrolysis proceeds at a high temperature, and the most likely reaction products are vinylacetylene and carbon monoxide. It is shown that the formation of products such as cyclobutadiene, acetylene, and propadienal can be explained by the occurrence of an energetically favorable pathway.
      PubDate: 2018-01-01
      DOI: 10.1134/s0010508218010021
      Issue No: Vol. 54, No. 1 (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)
       
  • Effect of Melting of Inert Components and Melt Flow on Nonstationary
           Combustion of Gasless Systems
    • Authors: V. G. Prokof’ev; V. K. Smolyakov
      Pages: 24 - 29
      Abstract: The effect of the thermocapillary flow of melt of inert components of gasless mixtures on the spinning combustion regimes of cylindrical samples has been studied numerically. The change in the structure of the spinning combustion wave due to a change in the sample radius is discussed, and new spinning combustion regimes are found. Increasing the melt flow velocity leads to stabilization of the combustion, i.e., to the transition from spinning regimes to the stationary propagation of the combustion wave.
      PubDate: 2018-01-01
      DOI: 10.1134/s0010508218010057
      Issue No: Vol. 54, No. 1 (2018)
       
  • Burning of Mixtures of Copper Oxide with Titanium
    • Authors: Yu. M. Mikhailov; V. V. Aleshin; V. I. Vershinnikov; T. I. Ignat’eva
      Pages: 30 - 34
      Abstract: This paper describes the study of the effect of physical and chemical properties of powder titanium and the equivalence ratio on the burning parameters of its mixtures with copper oxide. It is shown that the linear burning rate of such mixtures is significantly dependent on the brand of used titanium. Under normal conditions, the mixtures can stably burn with the content of copper oxide of not smaller than 13%. With an increase in the content of copper oxide to a stoichiometric ratio, there is a change of combustion regimes: multifocal, multifocal with detachment of solid residue, combination of convective and multifocal, multifocal with melt formation, flaming combustion, and fireball. It is determined that, in this system, there may be convective burning under atmospheric pressure in the absence of outer reinforcement.
      PubDate: 2018-01-01
      DOI: 10.1134/s0010508218010069
      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)
       
  • Oxidation of Aluminum in Mixtures with Polyethylene after Plastic
           Deformation at High Pressures
    • Authors: V. A. Zhorin; M. R. Kiselev; A. V. Grachev; T. A. Ladygina
      Pages: 47 - 57
      Abstract: Powder mixtures of low-density polyethylene and aluminum with the 20–80% weight ratio of the species are subjected to plastic deformation at pressures of 1 and 4 GPa in high-pressure devices of the Bridgman anvil type. Mass changes in the deformed mixtures in the temperature range from 30 to 800◦C are studied by the method of thermal gravimetry. A mass loss associated with polymer decomposition occurs in the temperature range from 30 to 450◦C, which is always smaller than the polymer content in the mixtures. A possible reason is the formation of thermally stable products due to aluminum interaction with polymer decomposition products. In the temperature range from 450 to 800◦C, the mass of the specimens increases, which is caused by aluminum oxidation and nitridation. The mass change depends on the deformation magnitude and pressure. To separate the oxidation and nitridation processes, the thermogravimetric measurements are performed in air, nitrogen, and argon. The thermal effects of aluminum interaction both with the polymer decomposition products and with oxygen and nitrogen are analyzed by the method of differential scanning calorimetry.
      PubDate: 2018-01-01
      DOI: 10.1134/s0010508218010082
      Issue No: Vol. 54, No. 1 (2018)
       
  • Oxidation of ASD-4 Powder Modified by V 2 O 5
    • Authors: V. G. Shevchenko; D. A. Eselevich; N. A. Popov; V. N. Krasil’nikov; Z. S. Vinokurov; A. I. Ancharov; B. P. Tolochko
      Pages: 58 - 63
      Abstract: The sequence of phase formation in the oxidation of ASD-4 aluminum powder modified by vanadium pentoxide during heating in air in the temperature range 873–1073 K has been studied by synchrotron radiation x-ray diffraction. It has been shown that the sharp acceleration of the oxidation of the modified powder is related to the loss of the protective properties of the oxide shell on the particle surface due to the polyvalence of vanadium, which provides structural and phase changes on the surface and in the depth of the oxidized metal.
      PubDate: 2018-01-01
      DOI: 10.1134/s0010508218010094
      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)
       
  • Exit of a Heterogeneous Detonation Wave into a Channel with Linear
           Expansion. II. Critical Propagation Condition
    • Authors: A. V. Fedorov; T. A. Khmel’; S. A. Lavruk
      Pages: 72 - 81
      Abstract: Propagation of a detonation wave in monodisperse suspensions of reacting particles (based on the model of the suspension of aluminum particles in oxygen) in channels with linear expansion is studied within the framework of mechanics of heterogeneous reacting media. Reduced kinetics is described with allowance for the transitional (from diffusion to kinetic) regime of combustion of micron-sized and submicron-sized spherical aluminum particles. The effects of the channel width, particle diameter, and expansion angle on propagation conditions and detonation regimes are determined. The critical channel width is found to be a nonmonotonic function of the expansion angle, which is associated with qualitatively different wave patterns behind an oblique step. Flow charts are constructed, and the results are compared with solutions of problems of heterogeneous detonation wave propagation in channels with a backward-facing step and with sudden expansion.
      PubDate: 2018-01-01
      DOI: 10.1134/s0010508218010112
      Issue No: Vol. 54, No. 1 (2018)
       
  • Relationship between the Critical Temperature of Thermal Explosion and the
           Thickness of a Lead Azide Plane Crystal
    • Authors: A. V. Khaneft
      Pages: 82 - 88
      Abstract: This paper describes the calculation of the relationship of the critical ambient temperature at which lead α-azide is ignited and the relationship of the critical temperature of self-heating with the thickness of plane crystals with the use of the Semenov criteria and numerical solution of the differential equation of heat balance. The stability of the heat balance equation is analyzed. Analytical expressions for the determination of critical ambient temperatures and self-heating temperatures. The calculations are carried out with the parameters of the heterogeneous reaction of thermal decomposition of lead azide in the mode of decreasing volume. The calculations results are in good agreement with the known experimental data. It is shown that the larger the activation energy of the exothermic reaction, the stronger the relationship of the critical temperature of ignition of lead α-azide with the thickness of plane crystals.
      PubDate: 2018-01-01
      DOI: 10.1134/s0010508218010124
      Issue No: Vol. 54, No. 1 (2018)
       
  • Standard Enthalpy of Formation of the Bimolecular Crystal of CL-20 with
           Tris-Oxadiazolo-Azepine and Its Thermal Stability
    • Authors: A. I. Kazakov; T. K. Goncharov; D. B. Lempert; N. A. Plishkin; K. V. Bozhenko; A. N. Utenyshev; D. V. Dashko; A. I. Stepanov; S. M. Aldoshin
      Pages: 89 - 96
      Abstract: The standard enthalpies of combustion and formation of 7H-tris([1,2,5]oxadiazolo) [3,4-b:3′,4′-d:3″,4″-f]azepine, its bimolecular crystal with the γ-polymorph of CL-20, and the γ-polymorph of CL-20 have been experimentally determined. The standard enthalpies of formation of the bimolecular crystal and an equimolecular mechanical mixture of γ-CL-20 with azepine differ by less than 12.8 kJ/mol. This small difference is validated by quantum chemical calculations. It has been experimentally found that the presence of azepine in the bimolecular crystal inhibits the thermal decomposition of γ-CL-20 and increases the thermal stability of γ-CL-20 in the bimolecular crystal as compared to original γ-CL-20.
      PubDate: 2018-01-01
      DOI: 10.1134/s0010508218010136
      Issue No: Vol. 54, No. 1 (2018)
       
  • Initiation of the Decomposition of a Semi-Transparent Mixture of Energetic
           Materials
    • Authors: A. G. Knyazeva; V. E. Zarko
      Pages: 97 - 105
      Abstract: In this paper, we propose a model for the heating and decomposition of a binary mixture of energetic materials by a short laser pulse which takes into account melting and the formation of a two-phase zone and the decomposition reaction of the individual components of the mixture. A binary solution of furazanotetrazine-dioxide (C2N6O3) and dinitrazapentane (C3H8N4O4) was studied as a model system. The pressure change in the reaction zone was calculated, and the effect of pressure on the rate of decomposition reactions was examined. Numerical investigations were performed to study the dynamics of the process and determine the main stages of the process: melting, the propagation of reaction zones in the mixture, the rapid development of an explosion or the termination of reactions, depending on the amount of stored energy. The influence of the optical properties of the mixture on the initiation dynamics was demonstrated.
      PubDate: 2018-01-01
      DOI: 10.1134/s0010508218010148
      Issue No: Vol. 54, No. 1 (2018)
       
  • Estimation of the Fireball Size in an Ethyne–Air Cloud Explosion
    • Authors: Y. Huang; Q. Zhang; H. Yan; W. Gao
      Pages: 106 - 112
      Abstract: A gas explosion accident is often followed by a serious fire. In order to effectively prevent fire induced by a gas explosion accident, it is necessary to have some knowledge of the related explosion processes. The subject of the present study is to examine deflagration behaviors beyond the original cloud of the ethyne–air mixture and the fireball size in an ethyne–air explosion by means of numerical simulations. The explosion overpressure, flow velocity, and reaction rate distribution in an ethyne–air explosion are obtained. The peak explosion overpressure is found to reach its maximum beyond the original cloud for ethyne–air mixtures with ethyne concentrations greater than 13% (by volume). The explosion pressures beyond the original cloud may be higher than those within the cloud for these ethyne–air mixtures. The ratio of the combustion range to that of the original cloud is 1.4–2.7 in the radial direction on the ground and 1.5–4.0 along the axis of symmetry perpendicular to the ground.
      PubDate: 2018-01-01
      DOI: 10.1134/s001050821801015x
      Issue No: Vol. 54, No. 1 (2018)
       
  • Specific Features of Sheet Acceleration under Conditions of Magnetic Pulse
           Welding
    • Authors: A. G. Anisimov; V. I. Mali
      Pages: 113 - 118
      Abstract: Magnetic pulse welding differs from explosive welding only by sources of energy for sheet acceleration: magnetic field energy is used instead of explosion energy. Magnetic field interaction with the sheet has some specific features associated with the value of energy stored in the battery, the rate of heating to the melting point, and the possibility of sheet buckling, which impose constraints on using magnetic pulse welding. These constraints are associated with geometric parameters of the welded sheets and the gaps between them; the critical values of these parameters are obtained in the present study. A capacitor battery is used in the experiments for sheet acceleration. A new pioneering scheme of magnetic pulse welding of more than two sheets is developed.
      PubDate: 2018-01-01
      DOI: 10.1134/s0010508218010161
      Issue No: Vol. 54, No. 1 (2018)
       
  • Generation of Hypervelocity Particle Flows by Explosive Compression of
           Ceramic Tubes
    • Authors: I. A. Balaganskii; L. A. Merzhievskii; V. Yu. Ul’yanitskii; I. A. Bataev; A. A. Bataev; A. D. Matrosov; I. A. Stadnichenko; I. S. Batraev; A. V. Vinogradov
      Pages: 119 - 124
      Abstract: The compression of ceramic (corundum) tubes by the detonation products of explosives have been studied experimentally and numerically. The formation of the shaped-charge jet of ceramic particles and its effect on steel witnesses targets has been investigated. The tubes were produced by detonation spraying. Ceramic particles were deposited on copper tubes, which were then dissolved in a solution of ferric chloride. In the experiments, a considerable penetration of the flow of ceramic particles was observed. During the interaction of the flow with the target, the target material was partially evaporated, as shown by metallographic analysis. Numerical analysis of the formation of the discrete shaped-charge jet showed that the maximum velocity of the jet head was about 23 km/s, and the velocity of the main part of the jet was about 14 km/s.
      PubDate: 2018-01-01
      DOI: 10.1134/s0010508218010173
      Issue No: Vol. 54, No. 1 (2018)
       
  • Numerical investigation of the distribution of oxygen atoms in syngas
           combustion products
    • Authors: V. M. Shvartsberg; V. A. Bunev; V. S. Babkin
      Pages: 619 - 625
      Abstract: The distribution of air oxygen atoms in the oxidation products of rich mixtures of syngas with air in flame and the under autoignition conditions at constant volume has been investigated by numerical simulation using the tracer method. It has been found that in rich mixtures, the oxidation of hydrogen and carbon oxide has a stepwise nature, which is clearly visible in the profiles of the rates of production of H2O and CO2. The observed stepwise nature inevitably results in the heat-release rate occurring in steps. The reaction pathways and the role of the oxygen atom of the CO molecule in the heat release in these flames has been investigated.
      PubDate: 2017-11-01
      DOI: 10.1134/s0010508217060016
      Issue No: Vol. 53, No. 6 (2017)
       
  • Effect of distributed injection of air into the afterburning chamber of a
           ram-rocket engine on the efficiency of combustion of boron particles
    • Authors: S. A. Rashkovskii; Yu. M. Milekhin; A. V. Fedorychev
      Pages: 652 - 664
      Abstract: A mathematical model of combustion of boron particles in a ram-rocket engine is developed. The boron combustion efficiency for one-stage and two-stage injection of air into the afterburning chamber is calculated. It is demonstrated that two-stage injection of air sometimes allows the time of complete combustion of boron particles to be significantly reduced (by a factor of 1.5–3); thus, the fuel combustion efficiency in the ram-rocket engine can be increased. The simulated results are consistent with available experimental data.
      PubDate: 2017-11-01
      DOI: 10.1134/s0010508217060053
      Issue No: Vol. 53, No. 6 (2017)
       
  • Shock wave distribution in an explosion of an explosive material with
           plastic filler
    • Authors: S. I. Gerasimov; A. L. Mikhailov; N. A. Trepalov
      Pages: 689 - 695
      Abstract: This paper describes the measurement results for the shock wave propagation during an explosion of an explosive material with plastic filler. The detection is carried out with the help of high-speed analog and digital video cameras. The air shock wave is visualized by means of shadow photography in transmitted light in the zone of separation from expanding explosion products and using a background oriented schlieren method in the far zone. The optical measurements of the air shock wave propagation are used to estimate a maximum pressure in the compression zone at different sections and compared with the data obtained by the pressure gauges. The calculated pressure peaks are in good agreement with the measured ones. The background oriented schlieren method proves to be a useful tool easily introduced in conventional large-scale polygon experiments.
      PubDate: 2017-11-01
      DOI: 10.1134/s0010508217060090
      Issue No: Vol. 53, No. 6 (2017)
       
 
 
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