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| Application of multi-dimensional upwind scheme in hypersonic aeroheating predictions on unstructured/hybrid grids |
| Received:September 24, 2017 Revised:April 15, 2018 |
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| DOI：10.7511/jslx20170929004 |
| KeyWord:Unstructured grid hybrid grid aerothermodynamic environment inviscid flux scheme multi-dimensional upwind scheme |
| Author | Institution |
| 万云博 |
中国空气动力研究与发展中心 计算空气动力研究所, 绵阳 |
| 马戎 |
中国空气动力研究与发展中心 计算空气动力研究所, 绵阳 |
| 王年华 |
中国空气动力研究与发展中心 计算空气动力研究所, 绵阳 |
| 张来平 |
中国空气动力研究与发展中心 计算空气动力研究所, 绵阳 ;中国空气动力研究与发展中心 空气动力学国家重点实验室, 绵阳 |
| 桂业伟 |
中国空气动力研究与发展中心 计算空气动力研究所, 绵阳 |
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| Abstract: |
| The unstructured/hybrid grid has a strong geometric flexibility and is widely used in the numerical simulation of aerodynamic characteristics of complex vehicles.However,it is hard to predict the aerothermodynamic environment accurately.Based on the three requirements of hypersonic aeroheating on unstructured/hybrid grid,a multi-dimensional upwind method is selected and studied intensively in this paper.The multi-dimensional upwind scheme and several widely used inviscid flux schemes (Roe,Van Leer and AUSMDV schemes) are compared based on the typical test case of hypersonic flow over a two-dimensional cylinder.The numerical results show that the multidimensional upwind method has a superior performance in terms of accuracy,robustness and convergence.Finally,the multidimensional upwind method is applied to predict the heat flux over a cylinder and a biconic configuration on the general hybrid grids.The numerical results of the heat flux are satisfactory,which demonstrates the capability for accurate aeroheating prediction over complex hypersonic vehicles on unstructured/hybrid grids. |
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