PROPAGATION OF A PULSATING FLAME FRONT IN A GASEOUS COMBUSTIBLE MIXTURE

PROPAGATION OF A PULSATING FLAME FRONT IN A GASEOUS COMBUSTIBLE MIXTURE
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脉动火焰锋在气态可燃混合物中的传播

DOI：
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发表时间：
1980
期刊：
影响因子：
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通讯作者：
David O. Olagunju
David O. Olagunju
中科院分区：
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文献类型：
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作者：
B. Matkowsky;David O. Olagunju

文献摘要

被引文献

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我们采用Matkowsky和Sivashinsky的化学反应气体的扩散-热模型，以显示存在的脉动火焰前的预混可燃气体受一步Arrhenius反应。当刘易斯数L超过临界值L_c时，火焰阵面的脉动是由均匀传播的平面火焰阵面产生的时间周期分岔。当L > L_c时，平面锋变得不稳定，系统的扰动演化到脉动态
We employ a diffusional-thermal model derived by Matkowsky and Sivashinsky for chemically reacting gases, to show the existence of a pulsating flame front in a premixed combustible gas governed by a one-step Arrhenius reaction. We show that the pulsating front arises as a time-periodic bifurcation from a uniformly propagating plane flame front when the Lewis number L exceeds a critical value $L_c $. For $L > L_c $, the plane front becomes unstable and perturbations of the system evolve to the pulsating state