计算物理 ›› 2013, Vol. 30 ›› Issue (1): 27-34.
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丁岩1, 袁礼2, 杨莉1
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DING Yan1, YUAN Li2, YANG Li1
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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
中图分类号:
O351
丁岩, 袁礼, 杨莉. 虚拟流体方法的显隐算法[J]. 计算物理, 2013, 30(1): 27-34.
DING Yan, YUAN Li, YANG Li. An Explicit-implicit Algorithm for Ghost Fluid Method[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2013, 30(1): 27-34.
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