Influence of gas compression on flame acceleration in channels with obstacles

被引：25

作者：

Bychkov, Vitaly ^{[2
]}

Akkerman, V'yacheslav ^{[1
]}

Valiev, Damir ^{[2
]}

Law, Chung K. ^{[1
]}

机构：

[1] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA

[2] Umea Univ, Dept Phys, SE-90187 Umea, Sweden

来源：

COMBUSTION AND FLAME | 2010年 / 157卷 / 10期

基金：

瑞典研究理事会;

关键词：

DETONATION; TRANSITION; DEFLAGRATION; DDT;

D O I：

10.1016/j.combustflame.2010.06.006

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The role of gas compressibility in flame acceleration in channels with obstacles is studied analytically. The theory is consistent with the mechanism of extremely fast flame acceleration in obstructed channels obtained recently by Bychkov et al. [Bychkov et al., Phys. Rev. Lett. 101 (2008) 164501]. The present theory accounts for small but finite gas compressibility through expansion for small initial Mach number up to the first-order terms. It is demonstrated that flame-generated compression waves moderate the acceleration process noticeably, and that, for finite but small gas compression, the theory is in good quantitative agreement with numerical simulations. (C) 2010 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

引用

页码：2008 / 2011

页数：4

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