Experimental Study of Forced Shock Train in an Isolator Under Asymmetric Incoming Flow

摘要：

The Ma=1.98 experiment under asymmetric incoming flow was conducted to analyze the response of the wall pressure in an isolator when the shock train is subjected to a periodic motion at a low frequency. It was found that the isolator effectively isolates the periodic back pressure fluctuation from the inlet Wall pressure fluctuations are due to the propagation of wave fronts of the second acoustic mode. But they are subjected to an oscillating shock train in most part of the shock oscillation region. Attenuation of wall pressure fluctuations in the shock oscillation region accords with the exponential law on the lower wall, and changes with wave shape and frequency of back pressure. It does not monotonously decrease but fluctuate on the upper wall.

关键词： scramjet isolator shock train forced shock train oscillation wall pressure fluctuation

作者: CAO Xue-bin ZHANG Kun-yuan

作者单位: College of Energy and Power Engineering Nanjing University of Aeronautics and Astronautics Nanjing, China

会议类型: 国际会议

会议名称: The 3rd International Symposium on Jet Propulsion and Power Engineering(第三届喷气推进与动力工程国际会议 ISJPPE)

会议地点: 南京

会议语种:英文

页码: 111-116

在线出版日期: 2010-09-13（万方平台首次上网日期，不代表论文的发表时间）