The Proceedings of the Thermal Engineering Conference
Online ISSN : 2424-290X
2018
Session ID : 0082
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Flame Propagation Velocity of a Diffusive-thermal Model
*Kazunori Kuwana
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Abstract

This paper discusses diffusive-thermal modeling of premixed-flame propagation with a particular focus on the accuracy of the Kuramoto-Sivashinsky (KS) equation. Numerical solutions of a two-dimensional diffusive-thermal system are compared with those of the corresponding KS equation at various values of a reduced Lewis number, α = β(1 - Le)/2, where β is the Zel'dovich number, and Le the Lewis number. It is found that discrepancy between the two models increases with increasing α. This is an expected result because the KS equation is formally obtained by taking the limit of α → 1.

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© 2018 The Japan Society of Mechanical Engineers
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