TY - JOUR
T1 - Numerical investigation on detonation cell evolution in a channel with area-changing cross section
AU - Deng, Bo
AU - Hu, Zongmin
AU - Teng, Honghui
AU - Jiang, Zonglin
PY - 2007/12
Y1 - 2007/12
N2 - The two-dimensional cellular detonation propagating in a channel with area-changing cross section was numerically simulated with the dispersion-controlled dissipative scheme and a detailed chemical reaction model. Effects of the flow expansion and compression on the cellular detonation cell were investigated to illustrate the mechanism of the transverse wave development and the cellular detonation cell evolution. By examining gas composition variations behind the leading shock, the chemical reaction rate, the reaction zone length, and thermodynamic parameters, two kinds of the abnormal detonation waves were identified. To explore their development mechanism, chemical reactions, reflected shocks and rarefaction waves were discussed, which interact with each other and affect the cellular detonation in different ways.
AB - The two-dimensional cellular detonation propagating in a channel with area-changing cross section was numerically simulated with the dispersion-controlled dissipative scheme and a detailed chemical reaction model. Effects of the flow expansion and compression on the cellular detonation cell were investigated to illustrate the mechanism of the transverse wave development and the cellular detonation cell evolution. By examining gas composition variations behind the leading shock, the chemical reaction rate, the reaction zone length, and thermodynamic parameters, two kinds of the abnormal detonation waves were identified. To explore their development mechanism, chemical reactions, reflected shocks and rarefaction waves were discussed, which interact with each other and affect the cellular detonation in different ways.
KW - Detailed chemical reaction model
KW - Detonation cells
KW - Numerical simulation
KW - Transverse waves
UR - https://www.scopus.com/pages/publications/44449150157
U2 - 10.1007/s11433-007-0076-0
DO - 10.1007/s11433-007-0076-0
M3 - Article
AN - SCOPUS:44449150157
SN - 1672-1799
VL - 50
SP - 797
EP - 808
JO - Science in China, Series G: Physics Astronomy
JF - Science in China, Series G: Physics Astronomy
IS - 6
ER -