Numerical studies of multi-cycle acetylene-air detonation induced by shock focusing

摘要：

　　Shock focusing techniques can avoid deflagration-to-detonation transition(DDT),which make PDE more efficiency.Numerical simulations of an idealized pulse detonation engine consisting of axial inlet and circumferential inlet are presented in this paper.Using detailed acetylene-air chemical kinetic model,investigation on detonation direct initiation by shock focusing is done.Studies indicate that in static flow field,the regions of high temperature and pressure created by shock focusing can produce detonation at the condition of circumferential inlet Mach 2.4.But in dynamic flow field,Mach number should increase to 3.5 to achieve detonation.

关键词： Multi-cycle detonation Shock focusing Numerical simulation

作者: Zhihong Zhang Zhiqiang Li Gan Dong

作者单位: National National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics,School of Energy and Power Engineering,Beijing University of Aeronautics and Astronautics,Beijing,100083,P.R.China

会议类型: 国际会议

会议名称: 2014 Asia-Pacific International Symposium on Aerospace Technology(2014亚太航空航天技术学术会议)

会议地点: 上海

会议语种:英文

页码: 1-6

在线出版日期: 2014-09-24（万方平台首次上网日期，不代表论文的发表时间）