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Analysis of the ignition induced by shock wave focusing equipped with conical and hemispherical reflectors
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TLDR
In this article, the authors examined the complex two-dimensional flow field resulting from the interaction of a plane shock wave entering a symmetrical cavity with a curved end wall, and provided new simulation and experimental evidence of the ignition behavior in various reflectors, supporting the effect of enhancing shock wave focusing on the ignition performance.About:
This article is published in Combustion and Flame.The article was published on 2022-02-01. It has received 49 citations till now. The article focuses on the topics: Shock wave & Ignition system.read more
Citations
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Suppression effect of porous media on natural gas explosion in utility tunnels
TL;DR: In this paper , an experimental platform for simulating the process of the natural gas explosion in utility tunnels is set up to study the flame propagation law and pressure dynamics distribution under the suppression effect of porous media.
Journal ArticleDOI
The effect of gas jets on the explosion dynamics of hydrogen-air mixtures
Xinyu Chang,Chunhua Bai +1 more
TL;DR: In this paper , the influence of gas jets on explosion behavior of hydrogen-air mixtures with various hydrogen concentrations (from 10% to 70%) at different initial pressures (i.e., 50kPa, 100 kPa, 150 kPa and 200 kPa) was investigated.
Journal ArticleDOI
The effect of ignition delay time on the explosion behavior in non-uniform hydrogen-air mixtures
TL;DR: In this paper , the authors examined the explosion characteristics of non-uniform hydrogen-air mixtures with turbulent mixing and found that the explosions are overall enhanced as the ignition delay decreases, which indicates that turbulence plays a leading role in enhancing the explosion behaviors.
Journal ArticleDOI
Explosion characteristics and chemical kinetics of blended LPG/DME clean fuel based on pyrolysis and oxidation mechanism model
TL;DR: In this article , the explosion effects of blended LPG/DME at the microscopic level and to investigate its explosion mechanism were analyzed using the UC San Diego 2016 C1-C4/ DME pyrolysis and oxidation mechanism model, and the results showed that the AO and the AFT both increase and then decrease with the increase of the equivalence ratio for different DME blended ratios, and reach the maximum value in the slightly rich fuel condition (Φ = 1.0-1.1), theoretically, the maximum values reach 776 kPa and 2340 K respectively.
References
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Journal ArticleDOI
Accumulation of errors in numerical simulations of chemically reacting gas dynamics
TL;DR: In this paper, the authors investigate problems of numerical simulations precision and stochastic errors accumulation in solving problems of detonation or deflagration combustion of gas mixtures in rocket engines.
Journal ArticleDOI
Hydrogen fuel rocket engines simulation using LOGOS code
Nickolay Smirnov,V.B. Betelin,R.M. Shagaliev,V. F. Nikitin,I.M. Belyakov,Yu.N. Deryuguin,S.V. Aksenov,D.A. Korchazhkin +7 more
TL;DR: In this article, the results of computer code developing, verification and validation, making it possible to simulate unsteady processes of ignition and combustion of hydrogen fuel in rocket engines are developed.
Journal ArticleDOI
An ignition delay and kinetic modeling study of methane, dimethyl ether, and their mixtures at high pressures
Ultan Burke,Kieran P. Somers,Peter O’Toole,Chis M. Zinner,Nicolas Marquet,Gilles Bourque,Eric L. Petersen,Wayne K. Metcalfe,Zeynep Serinyel,Henry J. Curran +9 more
TL;DR: In this article, both experimental and chemical kinetic model-predicted ignition delay time data are provided covering a range of conditions relevant to gas turbine environments (T = 600-1600 K, p = 7-41 K, ϕ ǫ = 0.3, 0.5, 1.0, and 2.0 in ‘air’ mixtures).
Journal ArticleDOI
Experimental and modeling study on ignition delays of lean mixtures of methane, hydrogen, oxygen, and argon at elevated pressures
TL;DR: In this article, the NUI Galway mechanism was adopted in the sensitivity analysis of the ignition kinetics of lean mixtures of methane-hydrogen with various hydrogen volumetric contents.
Journal ArticleDOI
Ignition delay characteristics of methane fuels
L.J. Spadaccini,M.B. Colket +1 more
TL;DR: In this paper, a comprehensive literature search and a series of shock-tube experiments were undertaken to determine the ignition delay times for mixtures of methane with ethane, propane or butane, and for a typical natural gas fuel.
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Analysis of the ignition induced by shock wave focusing equipped with conical and hemispherical reflectors
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