Numerical Simulation of Gaseous Detonation Propagation in a Multi-Tube Device
Two-dimensional, time-dependent, reactive Navier–Stokes equations involving the effects of viscosity, thermal conduction, molecular diffusion and turbulence etc. were solved to obtain a deep insight into gaseous detonation characteristics in a multi-tube device. Computation was performed for hydrogen–oxygen–argon mixtures at low initial pressure (8.00 kPa), using detailed chemical reaction model as well as standard k-ε turbulence model. Results indicate that, in a multi-tube device, detonation wave is strongly disturbed by wall geometry and undergoes a successive process of detonation decaying, separation of reaction zone from leading shock, detonation diffraction and the transition from normal reflection to Mach reflection etc. Multi-tube device has only a local effect on detonation propagation; the disturbed detonation wave can still be recuperated to a self-sustaining one. High H2 concentration distribution behind the leading shock can provide some information about reaction zone scale and the separation degree of reaction zone from leading shock. Additionally, double Mach reflection and transverse detonation emerge close to the top and bottom walls.
gaseous detonation wave multi-tube detailed chemical reaction model numerical simulation
WANG Changjian GUO Changming
State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, A State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 1
国际会议
2009 International Autumn Seminar on Propellants,Ezplosives and Pyrotechnics(2009国际推进剂、炸药、烟火技术秋季研讨会)
昆明
英文
1-5
2009-09-22（万方平台首次上网日期，不代表论文的发表时间）