计算物理 ›› 2008, Vol. 25 ›› Issue (1): 22-28.
• 研究论文 • 上一篇 下一篇
葛全文, 林忠, 王瑞利
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GE Quanwen, LIN Zhong, WANG Ruili
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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.
关键词: 边粘性, TVD输运限制子, 子网格
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 edgecentered artificial viscosity in capturing shock discontinuous.
Key words: edge-centered artificial viscosity, TVD(total variation diminishing) advection limiter, sub-zonal
中图分类号:
O241.82
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.
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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