计算物理 ›› 2013, Vol. 30 ›› Issue (1): 27-34.

• 论文 • 上一篇    下一篇

虚拟流体方法的显隐算法

丁岩1, 袁礼2, 杨莉1   

  1. 1. 河南理工大学, 河南 焦作 454000;
    2. 中国科学院数学与系统科学研究院计算数学所, 北京 100190
  • 收稿日期:2012-04-17 修回日期:2012-07-24 出版日期:2013-01-25 发布日期:2013-01-25
  • 作者简介:丁岩(1981-),男,博士,讲师,从事计算流体力学研究,E-mail:dingyan@lscc.cc.ac.cn
  • 基金资助:
    国家自然科学基金(11126116);河南理工大学博士基金(B2010-11)资助项目

An Explicit-implicit Algorithm for Ghost Fluid Method

DING Yan1, YUAN Li2, YANG Li1   

  1. 1. Henan Polytechnic University, Jiaozuo, Henan Province, 454000, China;
    2. Institute of Computational Mathematics, Academy of Mathematics and System Science, Chinese Acadcmy of Scicncc, Beijing 100190, China
  • Received:2012-04-17 Revised:2012-07-24 Online:2013-01-25 Published:2013-01-25

摘要: 基于算子分裂,把欧拉方程分裂成对流项和非对流项两部分,建立一种基于原始变量的二阶显隐算法.由通常的虚拟流体方法显式地预估流场,用隐式的压力修正对预估解进行修正.计算结果表明,这样可以有效增大时间步长,提高计算效率.

关键词: 虚拟流体方法, 显隐算法问题, 算子分裂

Abstract: Based on operator splitting technique, Euler equations is splitted into convection part and non-convection part. A predicted solution is obtained by solving the convection part with explicit GFM method. It is corrected by an implicit pressure correction algorithm derived from the non-convection part. A second order primitive explicit-implicit algorithm is built. It shows that CFL condition can be relaxed and efficiency is improved.

Key words: ghost fluid method, explicit-implicit algorithm, operator splitting

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