管内激波串振荡和壁面脉动压力特性  

Shock train oscillation and wall pressure fluctuation in internal flow

作　　者：王成鹏[1] 张堃元[1] 

机构地区：[1]南京航空航天大学,南京210016

出　　处：《实验流体力学》2010年第5期57-62,共6页Journal of Experiments in Fluid Mechanics

基　　金：国家自然科学基金(10702029;90916029)

摘　　要：分析了管内激波串振荡引起的壁面压力脉动特性。采用直联风洞实验方式结合动态压力测量技术获得了矩形管道内不同激波串位置下的壁面压力分布数据,对所得压力脉动幅值、功率谱密度曲线等结果进行分析,探讨激波串流动非定常特点与引起压力脉动的机制。This paper presents the characteristics of wall pressure fluctuations induced by the shock train oscillations in a straight duct.The surface pressure data were achieved by using a fluctuating wall pressure measurement system under different shock train location,and statistically analyzed.The unsteady features of the flow including the shock train structure and the mechanism of pressure fluctuation are discussed.

关 键 词：激波串 激波振荡 压力脉动 风洞实验 非定常流动 

分 类 号：V211.751[航空宇航科学与技术—航空宇航推进理论与工程]