| 混合通量差分格式的比较 |
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| 引用本文： | 段毅,杨永.混合通量差分格式的比较[J].计算物理,2006,23(3):355-360. |
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| 作者姓名： | 段毅 杨永 |
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| 作者单位： | 西北工业大学,翼型叶栅空气动力学国防科技重点实验室,陕西,西安,710072 |
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| 摘 要： | 系统研究了几种混合通量差分格式的构造方法和耗散模型,分别对低速平板绕流、二维跨音速喷管流动和高超音速钝头体无粘绕流进行了数值模拟,结合先进的EASM湍流模型对格式的粘性分辨率和激波稳定性进行了细致的比较分析.结果表明混合通量差分格式兼顾了FDS和FVS格式的优点,具有较高的间断分辨率和数值稳定性.
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| 关 键 词： | 混合通量差分格式 耗散模型 分辨率 |
| 文章编号： | 1001-246X（2006）03-0355-06 |
| 收稿时间： | 2004-12-14 |
| 修稿时间： | 2005-07-11 |
A Comparison of Hybrid Flux Difference Schemes |
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| DUAN Yi,YANG Yong.A Comparison of Hybrid Flux Difference Schemes[J].Chinese Journal of Computational Physics,2006,23(3):355-360. |
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| Authors: | DUAN Yi YANG Yong |
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| Abstract: | The building mechanism and artifical dissipation models of hybrid flux difference schemes are analyzed. The explicit algorithm turbulent model(EASM) is combined with the Reynolds average N-S equations to simulate turbulent flows.Resolution and robustness near shock discontinuities are investigated with low speed laminar/turbulent flows over a flat plate,transonic convergence-divergence diffuser flows and hypersonic inviscid flows over blunt-nose body.Compared with experimental data it shows that the hybrid flux difference schemes obtain similar resolution as a Roe-FDS scheme,and are free of non-physical numerical solutions as FVS schemes. |
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| Keywords: | EASM |
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