| 二维间断有限元混合网格混合算法研究 |
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| 引用本文： | 张冬云,杨永,郭永恒,李喜乐.二维间断有限元混合网格混合算法研究[J].航空计算技术,2009,39(1):64-67. |
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| 作者姓名： | 张冬云 杨永 郭永恒 李喜乐 |
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| 作者单位： | 西北工业大学,航空学院,陕西,西安,710072 |
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| 摘 要： | 针对二维流场进行结构／非结构混合网格划分，在靠近物面处生成结构化网格，在结构化网格以外和远场之间以非结构化网格填充。使用间断有限元方法（DGM）离散Euler方程。在混合网格混合算法中，结构化网格区域使用结构DGM，非结构化网格区域使用非结构DGM，保证结构／非结构对接面处的通量守恒，并加入moment限制器消除激波前后伪震荡。对NACA0012和RAE2822翼型跨音速无粘流动的数值模拟结果说明了混合算法的有效性以及在捕捉间断方面的能力。
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| 关 键 词： | 混合网格混合算法 间断有限元方法 moment限制器 |
Study on A Two-dimensional Mixed Solver of Structure/Unstructured Discontinuous Galerkin Method for Hybrid Mesh |
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| ZHANG Dong-yun,YANG Yong,GUO Yong-heng,LI Xi-le.Study on A Two-dimensional Mixed Solver of Structure/Unstructured Discontinuous Galerkin Method for Hybrid Mesh[J].Aeronautical Computer Technique,2009,39(1):64-67. |
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| Authors: | ZHANG Dong-yun YANG Yong GUO Yong-heng LI Xi-le |
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| Institution: | ZHANG Dong- yun, YANG Yong, GUO Yong- heng, LI Xi- le ( School of Aeronautics, Northwestern Polytechnical University, Xi＇an 710072, China) |
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| Abstract: | The 2D flowfield is devided into two different domains.The domain close to the surface boundary is filled with structure mesh.The outer domain,i.e.the domain between the outer edge of the inner domain and the farfield,is filled with unstructured mesh.The Discontinuous Garlerkin Method(DGM) is used to discretize the Euler equations.Within the mixed solver for hybrid mesh,the structure DGM algorithm is performed in the inner structure domain,while the unstructured DGM algorithm is adopted in the outer unstruc... |
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| Keywords: | mixed solver for hybrid mesh discontinuous galerkin method moment limiter |
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