Journal ArticleDOI
Formation and evolution of distorted tulip flames
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TLDR
In this article, the development and evolution of tulip and distorted tulip flames in closed channels were simulated by solving the fully compressible reactive Navier-Stokes equations using a high-order numerical method and a single-step Arrhenius model for the reactions and energy release in a stoichiometric mixture of hydrogen and air.About:
This article is published in Combustion and Flame.The article was published on 2015-11-01. It has received 158 citations till now. The article focuses on the topics: Premixed flame & Laminar flame speed.read more
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Premixed flame propagation in hydrogen explosions
TL;DR: In this paper, the authors summarized recent experimental and numerical efforts towards understanding combustion wave propagation in hydrogen explosions, including flame instabilities, flame acceleration, deflagrations, and deflagration-to-detonation transition (DDT).
Journal ArticleDOI
Effects of pressure waves on the stability of flames propagating in tubes
TL;DR: In this paper, the effects of pressure waves on the evolution and stability of flames propagating in tubes were studied, and the influence of tube length scale and aspect ratio was examined for a range of tube sizes that produce tulip flames.
Journal ArticleDOI
Shock focusing and detonation initiation at a flame front
Huahua Xiao,Elaine S. Oran +1 more
TL;DR: In this article, the fully compressible Navier-Stokes equations and a chemical-diffusive model for energy release and conversion of fuel to product in a stoichiometric hydrogen-air mixture were solved using a third-order method on a dynamically adapting mesh.
Journal ArticleDOI
Experimental study of premixed syngas/air flame deflagration in a closed duct
TL;DR: In this paper, the propagation behavior of a deflagration premixed syngas/air flame over a wide range of equivalence ratios was investigated experimentally in a closed rectangular duct using a high-speed camera and pressure transducer.
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Experimental study on premixed flame propagation of hydrogen/methane/air deflagration in closed ducts
TL;DR: In this paper, the authors investigated premixed hydrogen/methane/air flame propagation in closed ducts and found that the flame shape changes as the aspect ratio and hydrogen fraction vary.
References
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Journal ArticleDOI
On Upstream Differencing and Godunov-Type Schemes for Hyperbolic Conservation Laws
TL;DR: This paper reviews some of the recent developments in upstream difference schemes through a unified representation, in order to enable comparison between the various schemes.
Journal ArticleDOI
Restoration of the contact surface in the HLL-Riemann solver
TL;DR: The missing contact surface in the approximate Riemann solver of Harten, Lax, and van Leer is restored and the resulting solver is simpler and computationally more efficient than the latter, particulaly for non-ideal gases.
Book
The Mathematical Theory of Combustion and Explosions
TL;DR: In this paper, various topics in the area of combustion and explosives are discussed, including basic physical concepts of the science of combustion, the time-independent theory of thermal explosions, time-dependent statement of the problem of the initiation of chemical reaction waves in fuel mixtures, laminar flames, complex and chain reactions in flames, the gas dynamics of combustion dynamics, and diffusional combustion of gases.
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Flame acceleration and transition to detonation in ducts
Gaby Ciccarelli,S. Dorofeev +1 more
TL;DR: In this article, the state of knowledge on flame acceleration and deflagration-to-detonation transition (DDT) in smooth ducts and ducts equipped with turbulence-producing obstacles is reviewed.