Analysis of over/under TBCC inlet mode transition

摘要：

　　TBCC inlet mode transition refers to TBCC inlet transition from turbojet mode to ramjet mode or the opposite process which is achieved by the rotation of the splitter.The research of over/under TBCC inlet mode transition was conducted through a numerical simulation which have been validated.It shows that during the mode transition the terminal shock oscillates in the inlet,when the inlet mode transition comes to its end,the terminal shock tend to be steady.Meanwhile coupling of dynamic parameters in turbojet/ramjet flow-path appear during the inlet mode transition.The speed of mode transition and the working state of the turbojet/ramjet engine will affect the motion of terminal shock and the couple of two flow-path.During the process of inlet mode transition mass flow rate and outlet mach of turbojet flow-path reduce,while in ramjet flow-path they are opposite except outlet mach which increases first then decrease.The result we obtained in this paper can help us come to realize the unsteady phenomenon during the mode transition.And provide some suggestions for TBCC inlet mode transition which is based on the smooth transition of thrust.

关键词： Turbine Base Combined Cycle Inlet Inlet mode transition Unsteady numerical simulation Shock oscillation

作者: Liu jun Yuan hua cheng Guo rong wei

作者单位: Nanjing University of Aeronautics and Astronautics,Jiangsu Province Key Laboratory of Aerospace Power System,Nanjing 210016,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: 1-7

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）