二次元混合層内に形成された火炎の成長に関する数値シミュレーション : 第1報,速度比の影響

概要

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We numerically investigated an effect of coherent vortices in a two-dimensional reacting shear layer on flame growth. The vortices may contribute to combustion phenomena, and moreover, flame performance. In this study, we attempted the numerical analysis of the diffusion flame structure in the shear layer, in the early stage from the ignition, by solvig the time-dependent Navier-Stokes equations with the finite difference method, assuming the reaction is one-step and irreversible. The HSMAC method was modified so as to take the fluctuations of density and temperature into consideration. The calculation revealed the important result that heat transfer to the fast fluid caused by coherent vortices in the mixing layer provokes the blowoff.
社団法人日本機械学会の論文
1994-04-25