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The Lewis number under supercritical conditions

International Journal of Heat and Mass Transfer, 1999
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Harstad, K., Bellan, J.
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On the existence of high Lewis number combustion fronts [PDF]

Mathematics and Computers in Simulation, 2012
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Anna Ghazaryan, Christopher Jones 0004
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The Lewis number in reacting systems

Chemical Engineering Science, 1966
Abstract A single diffusion coefficient, D ′ applicable to steady-state processes in both equilibrium and non-equilibrium, multicomponent reacting systems is presented. This diffusion coefficient can be used to define the frozen Lewis number in its conventional form.
Christopher C. Shih, David M. Mason
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Fingering instability in nonadiabatic low-Lewis-number flames

Physical Review E, 1995
Employing the formal similarity between the dispersion relations for the hydrodynamic (Darrieus-Landau) and the diffusive instabilities at the quenching threshold, a phenomenological model for the nonlinear evolution of the near-limit premixed flame is proposed.
, Frankel, , Sivashinsky
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The effect of Lewis number on the stability of a catalytic reaction

AIChE Journal, 1970
AbstractAn extensive numerical study was carried out to determine the effect of Lewis number on the stability of a chemical reaction occurring inside a porous catalyst pellet. It is found that when the Lewis number is different from 1, the coupling between the concentration and temperature causes several pathological effects during the transient ...
James C. M. Lee, Dan Luss
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Analysis of Lewis number effects in flame spread

International Journal of Heat and Mass Transfer, 1993
De Ris's formulation of the problem of flame spread over thin and thick solid fuel surfaces is extended to include the influence of nonunity Lewis numbers of oxidant and fuel vapors. A zeroth order formula for the flame spread velocity is deduced. To this order of approximation, the Lewis number of the oxidant affects the spread rate only through its ...
J.B. Greenberg, P.D. Ronney
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High-Lewis number premixed flame instabilities

2021
Lean premixtures of high-molecular weight practical fuels typically have an associated Lewis number (Le) in excess of one and are susceptible to diffusive-thermal instabilities depending on the heat loss and hydrodynamic strain. These instabilities may lead to incomplete combustion, an increase in undesirable emissions and complex pressure oscillations.
Yi Ma, Howard Pearlman
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Lewis number effects on turbulent burning velocity

Symposium (International) on Combustion, 1985
Experimental values of turbulent burning velocities for propane, hydrogen and iso-octane mixtures with air are reported under conditions of high turbulence and high turbulent Reynolds number. The measurements were made by the double kernel method during explosions in a fan-stirred bomb, with four fans, capable of speeds of up to 10,000 rpm.
R.G. Abdel-Gayed, D. Bradley, M.N. Hamid, M. Lawes   +3 more
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