Results 181 to 190 of about 2,022 (227)

Effect of phase velocity nonequilibrium on flame propagation and extinction

Combustion, Explosion and Shock Waves, 1996
The problem of flame propagation in the presence of inert particles is considered. The mathematical model used is based on the equations of the mechanics of multiphase media in a two-temperature, two-velocity approximation. Numerical calculations of combustion in the presence of a dispersed phase in zero gravity show that the flame does not quench. For
G. M. Makhviladze, V. I. Melikhov, J. P. Roberts, G. I. Sivashinskii   +3 more
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The problem of flame propagation in a random velocity field: weak turbulence limit

Journal of Physics A: Mathematical and General, 1995
Summary: The problem of thin flame front propagation with curvature-dependent speed in a weak turbulent flow has been considered, and its connection with classical problems in the physics of disordered systems such as polymers in a random medium, growing interfaces and \(n\)-body interaction problems has been discussed.
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Flame Propagation and Stabilization in High Velocity Combustion Chamber

44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2008
The present paper contains results of experimental researches of multi-injector combustion chambers in a regime of the attached air pipe. As a source of high-enthalpy working gas (air) hot shot wind tunnel IT-302М of ITAM the Siberian Branch of the Russian Academy of Science was used.
Marat Goldfeld, Aleksey Starov, Konstantin Timofeev, Viacheslav Vinogradov   +3 more
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Turbulent Burning Velocities of Outwardly Propagating Flames

SAE Technical Paper Series, 2002
<div class="htmlview paragraph">In combustion engines, turbulence generated by flow field motion in the cylinder affects the propagating flame initiated by a spark plug, resulting in the increase of heat release rate and thus power available from an engine of a given size.
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Normal ammonia flame propagation velocities at elevated pressures

Combustion, Explosion and Shock Waves, 1985
The aim of the investigation was to determine the normal flame propagation velocities S /SUB n/ in ammonia-oxygen and ammonia-oxygen-nitrogen mixtures at atmospheric and elevated pressures p. For investigating the dependence S /SUB n/ (p), the authors chose compositions well away from the limits. This made it possible to disregard the lift of the flame
N. V. Andreeva, A. I. Él'natanov
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Flame Propagation Velocity Methane ‐ Hydrogen ‐ Oxygen Mixtures

Bulletin des Sociétés Chimiques Belges, 1959
AbstractFlame propagation velocities and temperatures in composite stoichiometric mixtures H2/CH4/O2 at different compositions and dilution have been investigated.The experimental results show a weak interaction in the sense of a weak inhibition of hydrogen combustion by methane and a weak promotion of the methane combustion by hydrogen.The activation ...
R. Corbeels, A. van Tiggelen
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Fuel effects on interacting triple flame propagation velocities

Combustion and Flame, 2019
Abstract Triple flame propagation velocities have been characterized in the literature as a function of equivalence ratio gradient and flame curvature to better understand flame propagation through a single fuel–air mixing layer. Turbulent partially-premixed flowfields, however, can produce regions which have multiple stoichiometric locations, and ...
Stephen W. Grib, Michael W. Renfro
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Propagation velocity and structure of single step reaction flames

Combustion and Flame, 1961
Abstract A new analytical procedure is proposed for the calculation of propagation velocities of premixed laminar flames supported by single step chemical reactions. Simple rules or equations for predicting the propagation velocity and flame structure have been achieved through a postulated exponential approximation for the flux fraction of species ...
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The Characteristics of the Flame Propagation Velocity and Volume Integral of Reaction Rate with the Variation of Fuel Injection Velocity for a Liftoff Flame

Journal of the Korean Society of Marine Engineering, 2009
Abstract ： A numerical analysis of reactive flow in a liftoff flame is acc omplished to elucidate the characteristics of flame propagation velocity and volume integral of reaction rate with the variation of fuel injection velocity at the fuel rich region, fuel lean region and diffusion flame region.
Ji-Soo Ha, Tae-Kwon Kim, Jeung Park
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Flame propagation: the effect of pressure variation on burning velocities

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1954
Abstract The burning velocity of mixtures of methane, propane, ethylene and propylene with air are determined under constant-pressure conditions in a tube of rectangular section at pressures from ½ to 9 atm. For methane and also for propane, the effect of mixture strength was also investigated.
Alfred Charles Egerton, A. H. Lefebvre
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