TY - JOUR
T1 - Influence of gas compression on flame acceleration in channels with obstacles
AU - Bychkov, Vitaly
AU - Akkerman, V'yacheslav
AU - Valiev, Damir
AU - Law, Chung K.
N1 - Funding Information:
The work at Umea University was supported by the Swedish Research Council (VR) and the Swedish Kempe Foundation. The work at Princeton University was supported by the US Air Force Office of Scientific Research.
PY - 2010/10
Y1 - 2010/10
N2 - 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.
AB - 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.
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U2 - 10.1016/j.combustflame.2010.06.006
DO - 10.1016/j.combustflame.2010.06.006
M3 - Article
AN - SCOPUS:77955775387
SN - 0010-2180
VL - 157
SP - 2008
EP - 2011
JO - Combustion and Flame
JF - Combustion and Flame
IS - 10
ER -