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| Study on the application of nonlinear EASM turbulence model in supersonic flows |
| Received:July 12, 2016 Revised:November 14, 2016 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20160712002 |
| KeyWord:turbulence model explicit algebraic Reynolds stress model compressibility modification supersonic flow separation flow shear layer |
| Author | Institution |
| 姜宝森 |
中国航天空气动力技术研究院, 北京 |
| 张亮 |
中国航天空气动力技术研究院, 北京 |
| 苏鹏辉 |
中国航天空气动力技术研究院, 北京 |
| 李俊红 |
中国航天空气动力技术研究院, 北京 |
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| Abstract: |
| To meet the needs of simulating complex supersonic flow regions accurately,the nonlinear explicit algebraic Reynolds stress model (EASM) based on the form of k-ω compressibility modification is developed.The numerical simulation accuracy of the model for supersonic flow is improved.The flows of 2-D supersonic cavity and 3-D hypersonic double ellipsoid are calculated by EASM.Compared with the conventional linear eddy viscosity models(SA and SST turbulence models),EASM has the potential ability to describe the flow structure of massive separation and shear layer in more sophisticated detail and simulate pressure and friction coefficient distribution in the region where shear layer reattaches more precisely.Distribution of pressure and heat flux induced by secondary shock wave are simulated accurately. |