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本文通过活化能渐近分析方法研究了非绝热正向阴燃波的两种典型结构,即反应滞后结构和反应前导结构,比较了当来流空气流量发生变化时两种结构的主要特征参数的变化规律。研究结果表明,相比较于绝热情况,当考虑阴燃向外界的对流热损失效应时,两种正向阴燃结构随来流空气流量变化时的一维响应均表现为两个解分支,相应地存在一个熄灭极限,对应最小的来流空气流量。

Two characteristic structures of non-adiabatic forward smolder waves, namely reaction trailing structure and reaction leading structure, are investigated by using activation energy asymptotic methods. A comparison is made of the responses of the characteristic quantities of the two structures with respect to the incoming air flow rate. Results show that, in comparison with the adiabatic case, when the convective heat loss effect is taken into account, the 1-D response curve for each of the two structures consists of two solution branches and, accordingly, there exists an extinction limit, corresponding to a minimum incoming air flow rate.

参考文献

[1] 卢占斌,董永.正向阴燃波的结构和稳定性[J].工程热物理学报,2011(03):521-524.
[2] Lu, Z.;Dong, Y. .Fingering instability in forward smolder combustion[J].Combustion theory and modelling,2011(6):795-815.
[3] J.H. Wang;C.Y.H. Chao;Wenjun Kong .Experimental study and asymptotic analysis of horizontally forced forward smoldering combustion[J].Combustion and Flame,2003(4):405-419.
[4] I. Yucel Akkutlu;Yanis C. Yortsos .The dynamics of in-situ combustion fronts in porous media[J].Combustion and Flame,2003(3):229-247.
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