一个磁流体力学中心型数值通量的耗散控制器

计算物理 ›› 2010, Vol. 27 ›› Issue (3): 361-368.

一个磁流体力学中心型数值通量的耗散控制器

吴昊

中国工程物理研究院研究生部, 北京 100088

收稿日期:2009-10-14 修回日期:2009-12-09 出版日期:2010-05-25 发布日期:2010-05-25
作者简介:吴昊(1980-),male,PHD candidate,Shandong Province,The graduate school of China Academy of Engineering Physics.Interested field:CFD.
基金资助:
Supported in part by the National Natural Science Foundation of China under Grant No. 10431050 and the foundation of CAEP 2007B09008, foundation of LCP 9140C6902010805

Dissipation Regulator for Central Fluxes in MHDs

WU Hao

The graduate school of China Academy of Engineering Physics, Beijing 100088, China

Received:2009-10-14 Revised:2009-12-09 Online:2010-05-25 Published:2010-05-25
Supported by:
Supported in part by the National Natural Science Foundation of China under Grant No. 10431050 and the foundation of CAEP 2007B09008, foundation of LCP 9140C6902010805

摘要/Abstract

摘要： 提出一种针对磁流体力学模拟中中心型数值通量的耗散控制器.由于磁流体力学方程组较为复杂,中心型数值通量不需要复杂的特征分解,因而中心型数值格式更适合磁流体力学的数值模拟.但是稳定单调的中心型数值通量比迎风型数值通量耗散大,对此,提出一种控制中心型数值通量数值耗散的控制器.将这个耗散控制器应用于以局部Lax-Feiedrichs格式通量为例的中心型数值通量.两个基准解的数值算例证明方法有效.

关键词: 磁流体力学, 中心型数值通量, 耗散控制器

Abstract: We propose a method to regulate numerical dissipation of central numerical fluxes in magnetohydrodynamics,and give a dissipation regulator for central numerical fluxes.We take Local Lax-Friedrichs flux as an example and apply the dissipation regulator in computation.A second order accurate MUSCL data reconstruction is used to extend Local LaxFriedrichs scheme to second-roder.Two test benchmark problems show that the dissipation regulator is effcient.

Key words: magnetohy drody namic s(MHDs), central fluxes, dissipationregulator

中图分类号:

吴昊. 一个磁流体力学中心型数值通量的耗散控制器[J]. 计算物理, 2010, 27(3): 361-368.

WU Hao. Dissipation Regulator for Central Fluxes in MHDs[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2010, 27(3): 361-368.

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