Numerical Investigation on the Restabilization of Rotating Detonation Engines

摘要：

　　This paper clarifies the transition process of the RDE after a sudden change is imposed on the injection stagnation pressure.The sudden change of the stagnation pressure has an immediate influence on the average axial velocity at the head end of the RDE,which increases abruptly and instantly with the sudden rise of the stagnation pressure.After that,the average axial velocity drops and the average pressure increases gradually at the head end until they reach a new stable state.The average pressure has a bounce and the average axial velocity fluctuates at the head end in the transition process of the sudden decrease of the stagnation pressure.For both the sudden decrease and increase of the stagnation pressure,the main transition time is about twice the cycle period of the detonation wave around the chamber,demonstrating the high stability of the RDE.

关键词： Rotating Detonation Engines Restabilization Transition Process Stagnation Pressure

作者: Dan Wu Yan Liu Jianping Wang

作者单位: Center for Combustion and Propulsion, CAPT and SKLTCS, Dept. Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, China

会议类型: 国际会议

会议名称: The 8th International Conference of Computational Fluid Dynamics, (ICCFD8)(第八届国际计算流体力学会议)

会议地点: 成都

会议语种:英文

页码: 1-2

在线出版日期: 2014-07-25（万方平台首次上网日期，不代表论文的发表时间）