| 非结构子网格压力方法抑制爆轰模拟中的砂漏畸变 |
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| 引用本文： | 葛全文,林忠,王瑞利. 非结构子网格压力方法抑制爆轰模拟中的砂漏畸变[J]. 工程数学学报, 2008, 25(3): 395-404 |
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| 作者姓名： | 葛全文 林忠 王瑞利 |
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| 作者单位： | 北京应用物理与计算数学研究所六室,北京8009信箱,北京,100088;北京应用物理与计算数学研究所六室,北京8009信箱,北京,100088;北京应用物理与计算数学研究所六室,北京8009信箱,北京,100088 |
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| 基金项目： | 中国物理研究院科研项目 |
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| 摘 要： | 本文推广包括子网格压力和边粘性的相容流体算法到非结构网格,研制了包括子网格压力和边粘性的非结构网格相容流体程序,对Saltzman活塞问题和平面爆轰问题进行了数值模拟。从数值结果分析可知,包括子网格压力和边粘性的非结构网格相容流体算法能够有效捕捉流体的激波间断,成功抑制虚假涡漩,消除爆轰模拟中的砂漏畸变。
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| 关 键 词： | 边粘性 子网格压力 砂漏畸变 |
Elimination of the Hourglass Motion of Explosion by Means of Unstructured Subzonal Pressures |
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| GE Quan-wen,LIN Zhong,WANG Rui-li. Elimination of the Hourglass Motion of Explosion by Means of Unstructured Subzonal Pressures[J]. Chinese Journal of Engineering Mathematics, 2008, 25(3): 395-404 |
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| Authors: | GE Quan-wen LIN Zhong WANG Rui-li |
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| Abstract: | We extend the compatible Lagrangian hydrodynamics algorithm including subzonal pressures and the edge artificial viscosity to unstructured zone,and develop the compatible Lagrangian hydrodynamics code including subzonal pressures and the edge artificial viscosity.Numerical examples of Saltzman piston and plane explosion are given,numerical results demonstrate that compatible Lagrangian hydrodynamics algorithms including subzonal pressures and the edge artificial viscosity can accurately and efficiently capture shock discontinuity,eliminate of hourglass motion of explosion and restrain of spurious vorticity. |
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| Keywords: | the edge artificial viscosity sub-zonal pressures hourglass motion |
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