计算物理 ›› 2006, Vol. 23 ›› Issue (1): 37-42.

• 论文 • 上一篇    下一篇

SALE速度重映算法的改进

熊俊, 周海兵, 张树道   

  1. 北京应用物理与计算数学研究所, 北京 100088
  • 收稿日期:2004-10-29 修回日期:2005-04-05 出版日期:2006-01-25 发布日期:2006-01-25
  • 作者简介:熊俊(1975-),男,湖北汉川,助理研究员,从事计算流体力学方面的研究.
  • 基金资助:
    CAEP科学技术基金(批准号:20040106)资助项目

Improved Velocity Remapping Algorithms Based on SALE

XIONG Jun, ZHOU Hai-bing, ZHANG Shu-dao   

  1. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • Received:2004-10-29 Revised:2005-04-05 Online:2006-01-25 Published:2006-01-25

摘要: 在一维交错网格上基于SALE算法的速度重映策略,提出了3种动量通量的改进算法:①采用迎风斜率加修补的SUR目的;②采用minmod斜率限制器的SM目的和③采用一种新的斜率限制器加修补的SLR目的.3种目的具有二阶守恒保界的性质,同时继承了SALE算法简单高效的特点,可以直接推广到二维情况.

关键词: ALE, 交错网格, 速度重映

Abstract: Based on the velocity remapping strategy of the SALE algorithm, three methods are proposed to improve the accuracy and monotonicity of momentum flux calculation on a 1D staggered grid: the SUR method which employs the upwind-type slope and a repairing procedure; the SM method which employs a minmod slope limiter; and the SLR method which employs a new slope limiter and a repairing procedure. These methods are second-ordered, conservative and bound-preserving. They inherit advantages of simplicity and high efficiency of the SALE algorithm. They are easily generalized to the two-dimensional case.

Key words: ALE(Arbitrary Lagrangian-Eulerian), staggered grid, velocity remapping

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