水素混合気の乱流燃焼時における選択拡散の効果

概要

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Recently, clarifying the turbulent combustion mechanism of hydrogen mixtures and the local burning mechanism in the turbulent flame has become necessary to establish the lean-burn technique in internal combustion engines in order to protect the environment and save energy. In previous work, experimental results indicated that local burning velocity in turbulent combustion of hydrocarbon mixtures changed from the original laminar burning velocity, and this mechanism was qualitatively explained in terms of the effects of the Lewis number and preferential diffusion. The purpose of this paper is to estimate quantitatively the change in the local burning velocity of the turbulent combustion of hydrogen mixtures, caused by preferential diffusion. In addition, it is suggested that the quenching mechanism can possibly be explained regardless of the kind of fuel, when the estimated local burning velocity is used as a reference instead of the laminar burning velocity.
一般社団法人日本機械学会の論文
1996-08-25