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所属单位：南京航空航天大学航空学院空气动力学系

教研室：高速风洞实验室

发表刊物：Acta Astronautica

刊物所在地：Elsevier

项目来源：国家自然科学基金

关键字：Background-oriented schlieren;3D reconstruction;Quantitative measurement;Visualization of flow field

摘要：To study the three-dimensional flow structure of an incident shock/boundary layer interaction, a M2.7 nozzle model with a ramp was tested based on the background-oriented schlieren (BOS) technique. After comparing the results of CFD, shear-sensitive liquid crystal (SSLC), and high-speed schlieren, we conclude that BOS can capture the internal structure of the flow field and that its results are consistent with those of other methods in which the relative error can be controlled to 7%. In this research, a new type of experiment with several light paths was used with BOS technology. Three-dimensional reconstruction of incident oblique shock (primarily the width of Mach stem of the shock wave) and quantitative results of the flow field can be obtained successfully, and BOS shows great potential for the measurement of flow fields.

论文类型：期刊论文

论文编号：Acta Astronautica 2019（157）, 341-349

学科门类：工学

一级学科：航空宇航科学与技术

文献类型：J

卷号：157

页面范围：341-349

字数：4107

ISSN号：0094-5765

是否译文：否

发表时间：2019-01-01

收录刊物：SCIE