Coupling Effect of Cavity and Strut in a Dual-mode Scramjet Combustor

摘要：

　　Experiments were performed to investigate the combustion characteristics of a scramjet engine using the swept-back strut injection upstream of the inclined cavity in clean air.The experimental results show that when the fuel equivalence ratio from strut was more than 0.75 and the fuel injected from wall was upstream,the original position of pressure rise was located upstream and the peak pressure was higher.The rise time of wall pressure of the combustor delayed than the rise time of gas generator,indicating that the ignition needed time to response,and the ignition process was complex.The Mach number of the coupling region was just about 0.47,the gas was subsonic.When the equivalence ratio from wall was larger,the combustion efficiency was lower.

关键词： Strut Cavity Clean air coupling effect

作者: Wang Jianchen Lin Yuzhen Zhang Chi

作者单位: National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics,Co-innovation Center for Advanced Aero-Engine,School of Energy and Power Engineering,Beihang University,Beijing,100191,P. R. China

会议类型: 国际会议

会议名称: The 5th International Symposium on Jet Propulsion and Power Engineering(第五届喷气推进与动力工程国际会议)

会议地点: 北京

会议语种:英文

页码: 1-6

在线出版日期: 2014-09-15（万方平台首次上网日期，不代表论文的发表时间）