点击次数：

所属单位：航空学院

教研室：高速风洞实验室

发表刊物：J. Fluid Mech.

刊物所在地：Cambridge University Press

项目来源：国家自然科学基金

关键字：flow–structure interactions, high-speed flow, boundary-layer separation

摘要：In this paper, the incident shock–separation shock interactions on a surface plate near the leading edge are studied theoretically and experimentally, and the transition from regular reflection (RR) to Mach reflection (MR) is the main focus. The theoretical method employs free interaction theory (FIT) and the minimum entropy production (MEP) principle to analyse the separation shock strength of flow separated from the boundary layer and separated from the leading edge, respectively, the criterion based on the MEP principle is employed to predict the RR-to-MR transition near the leading edge. The experiments were performed on a rotatable wedge situated over a sharp leading-edge plate such that the wedge could continuously change the flow deflection angle from 0◦ to 40◦ by means of a high-precision control device. Fast-response transducers and a high-speed camera were used to measure dynamic pressures and to take schlieren images, respectively. The influences of wedge positions, Reynolds

论文类型：期刊论文

论文编号：doi:10.1017/jfm.2021.421

学科门类：工学

一级学科：力学

卷号：919

期号：A40

页面范围：A40 1-21

ISSN号：0022-1120

是否译文：否

发表时间：2021-06-01