| 非结构网格边粘性公式 |
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| 引用本文： | 葛全文,林忠,王瑞利.非结构网格边粘性公式[J].计算物理,2008,25(1):22-28. |
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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, 北京 100088 |
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| 基金项目： | 中物院基金(20050651)资助项目 |
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| 摘 要： | 利用Kuropatenko提出的人为粘性形式和Christiansen建议的TVD(Total Variation Diminishing)输运限制子构造非结构网格边粘性,用最大角原则选择邻边构造限制子,研制包括边粘性的相容流体程序,给出边粘性与体粘性数值模拟比较,对Saltzman活塞问题、Noh问题进行数值实验.数值实验结果比较说明,非结构网格边粘性准确检出强速度梯度不存在的情形,减弱人为粘性力的作用,有效捕捉流体的激波间断,提高模拟精度.
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| 关 键 词： | 边粘性 TVD输运限制子 子网格 |
| 文章编号： | 1001-246X（2008）01-0022-07 |
| 收稿时间： | 2006-07-25 |
| 修稿时间： | 2007-03-01 |
Formulation of Edge-centered Artificial Viscosity Unstructured Mesh |
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| GE Quanwen,LIN Zhong,WANG Ruili.Formulation of Edge-centered Artificial Viscosity Unstructured Mesh[J].Chinese Journal of Computational Physics,2008,25(1):22-28. |
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| Authors: | GE Quanwen LIN Zhong WANG Ruili |
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| Institution: | Institute of Applied Physics and Computational Mathematics, Beijing 100088, China |
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| Abstract: | With artificial viscosity and total variation diminishing advection limiter,the edge-centered artificial viscosity with structure zones is extended to unstructured grids.The limiter is constructed by neighbor edges determined by maximum angle choice.The edge-centered artificial viscosity is compared with the zone-centered artificial viscosity.Numerical results demonstrate accuracy and efficiency of the edge-centered artificial viscosity in capturing shock discontinuous. |
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| Keywords: | edge-centered artificial viscosity TVD(total variation diminishing)advection limiter sub-zonal |
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