计算物理 ›› 2011, Vol. 28 ›› Issue (5): 641-648.

• 研究论文 • 上一篇    下一篇

多块结构网格上的Kershaw扩散格式

曾清红, 裴文兵, 成娟, 勇珩   

  1. 北京应用物理与计算数学研究所, 北京 100094
  • 收稿日期:2010-10-21 修回日期:2011-02-18 出版日期:2011-09-25 发布日期:2011-09-25
  • 作者简介:曾清红(1978-),男,汉族,湖南长沙,副研究员,博士,主要从事辐射流体力学计算方法研究。E-mail:zeng_qinghong@iapcm.ac.cn
  • 基金资助:
    国家自然科学基金(11001026,10901021,10972043)资助项目

Extension of Kershaw Diffusion Scheme on Multi.block Grids

ZENG Qinghong, PEI Wenbing, CHENG Juan, YONG Heng   

  1. Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
  • Received:2010-10-21 Revised:2011-02-18 Online:2011-09-25 Published:2011-09-25

摘要: Kershaw格式是在四边形结构网格上求解扩散方程的-种经典格式.基于对Kershaw格式中"流"的深入理解,将其拓展到包含非结构点的多块结构网格,分别推导退化非结构点和强化非结构点情况下的Kershaw格式,拓展的Kershaw格式满足流连续条件.三个数值算例的计算结果与精确解吻合得很好,表明将Kershaw格式拓展到多块结构网格的正确性和有效性.

关键词: 惯性约束聚变, 扩散方程, Kershaw格式, 多块结构网格, 非结构点

Abstract: Based on physical flux Kershaw scheme is extended to multi-block glids and algorithms for degenerative connection or strong connection unstructured points are shown.Flux continuity condition is met in the extended Kershaw scheme on multi-block girds which keeps energy conservation.Three numerical examples show good agreement with exact solutions. It validates accuracy and robustness of the extended Kershaw scheme on multi-block grids.

Key words: inertial confinement fusion, diffusion equation, Kershaw scheme, multi-block structured grids, unstructured points

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