Results 221 to 230 of about 32,675 (265)

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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Flame propagation: the measurement of burning velocities of slow flames and the determination of limits of combustion

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1952
Abstract A method of measuring burning velocities of combustible gas/air mixtures near the limits of combustion is developed, using a burner providing a flat disk-shaped flame. The method is applied to methane, propane, n-pentane, n-heptane, ethylene, acetylene and benzene flames of velocities 5 to 10 cm/s.
Alfred Charles Egerton, S. K. Thabet
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Study of Flame Propagation Velocity Inside a Closed Duct and Validation with Flame Propagation Theory

Procceedings of the 19th Brazilian Congress of Thermal Sciences and Engineering, 2022
Marcos Dall Agnol, Rafael Quines, Manuel Nzinga, Andrés Armando Mendiburu Zevallos   +3 more
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Calculation of the Structure of Laminar Flat Flames I: Flame Velocity of Freely Propagating Ozone Decomposition Flames

Berichte der Bunsengesellschaft für physikalische Chemie, 1978
AbstractA method is described which allows to include complete multicomponent formulation of diffusion and heat conduction in the solution of the time‐dependent conservation equations of a laminar flat flame. Calculations with simplified transport models are presented for comparison.
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