Three-dimensional supersonic flow around double compression ramp with finite span
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- 作者：H. S. Lee ; J. H. Lee ; G. Park ; S. H. Park ; Y. H. Byun
- 关键词：Computational fluid dynamics ; Supersonic flow ; Shock wave/boundary layer interaction ; Double ; compression ramp
- 刊名：Shock Waves
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：27
- 期：1
- 页码：69-77
- 全文大小：
- 刊物类别：Physics and Astronomy
- 刊物主题：Engineering Thermodynamics, Heat and Mass Transfer; Fluid- and Aerodynamics; Engineering Fluid Dynamics; Thermodynamics; Acoustics; Condensed Matter Physics;
- 出版者：Springer Berlin Heidelberg
- ISSN：1432-2153
- 卷排序：27
文摘
Three-dimensional flows of Mach number 3 around a double-compression ramp with finite span have been investigated numerically. Shadowgraph visualisation images obtained in a supersonic wind tunnel are used for comparison. A three-dimensional Reynolds-averaged Navier–Stokes solver was used to obtain steady numerical solutions. Two-dimensional numerical results are also compared. Four different cases were studied: two different second ramp angles of \({30}^{\circ }\) and \({45}^{\circ }\) in configurations with and without sidewalls, respectively. Results showed that there is a leakage of mass and momentum fluxes heading outwards in the spanwise direction for three-dimensional cases without sidewalls. The leakage changed the flow characteristics of the shock-induced boundary layer and resulted in the discrepancy between the experimental data and two-dimensional numerical results. It is found that suppressing the flow leakage by attaching the sidewalls enhances the two-dimensionality of the experimental data for the double-compression ramp flow.