避免人工干预的流体力学Riemann解法器

doi:10.19596/j.cnki.1001-246x.7630

计算物理 ›› 2018, Vol. 35 ›› Issue (1): 1-12.DOI: 10.19596/j.cnki.1001-246x.7630

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避免人工干预的流体力学Riemann解法器

任健, 沈智军, 闫伟, 袁光伟

北京应用物理与计算数学研究所, 北京 100094

收稿日期:2017-01-20 修回日期:2017-02-13 出版日期:2018-01-25 发布日期:2018-01-25
通讯作者: 沈智军(1966-),男,研究员,主要从事流体力学计算方法研究,E-mail:shen_zhijun@iapcm.ac.cn
作者简介:任健(1978-),男,副研究员,博士生,研究方向为辐射流体计算方法与数值模拟,E-mail:ren_jian@iapcm.ac.cn
基金资助:
国家自然科学基金（11471048，U1630249），中国工程物理研究院科学技术基金（2014A0202010），计算物理实验室基金（6142A05020203）及科学挑战计划（JCKY2016212A502）资助项目

A Robust Riemann Solver Without Artificial Intervention

REN Jian, SHEN Zhijun, YAN Wei, YUAN Guangwei

Institute of Applied Physics and Computational Mathematics, Beijing 100094, China

Received:2017-01-20 Revised:2017-02-13 Online:2018-01-25 Published:2018-01-25

摘要/Abstract

摘要： 为克服体平均多流管格式（MFCAV）实施中存在人工干预的不足，基于移动网格设计适用于若干实际流场计算的HLLCM格式，该格式可以较好地抑制网格非物理变形，可避免人为调整网格.简化模型算例表明，HLLCM格式保持球对称性，计算结果优于MFCAV格式；应用模型算例表明，在复杂流场、实用状态方程、无人为干预措施的情形，与MFCAV格式相比，HLLCM格式可有效模拟的物理过程时间大幅延长，流场网格品质与能量守恒误差均有较大的改善.

关键词: 多流管格式, 人工干预措施, HLLCM格式, Riemann解法器, ALE方法

Abstract: In order to improve robustness of multi-fluid-channel scheme on average of volume (MFCAV) and overcome its artificial intervention in actual application, a new HLLCM scheme was designed on a moving mesh, which restrains non-physical mesh tangling without artificial intervention. Numerical results show that the HLLCM scheme maintains one-dimensional spherical symmetry on equal-angle-zoned grids which has better numerical effects in keeping mesh quality and energy conservation in complex applications than MFCAV scheme.

Key words: artificial intervention, HLLCM scheme, Riemann solver, arbitrary Lagrangian Eulerian method

中图分类号:

任健, 沈智军, 闫伟, 袁光伟. 避免人工干预的流体力学Riemann解法器[J]. 计算物理, 2018, 35(1): 1-12.

REN Jian, SHEN Zhijun, YAN Wei, YUAN Guangwei. A Robust Riemann Solver Without Artificial Intervention[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2018, 35(1): 1-12.

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避免人工干预的流体力学Riemann解法器

A Robust Riemann Solver Without Artificial Intervention

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