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Simulating Magnetohydrodynamic Instabilities with Conservative Perturbed MHD Model Using Discontinuous Galerkin Method

文献类型：期刊论文

作者Ma, Jun1,2; Guo, Wenfeng1,2; Yu, Zhi1,2
刊名COMMUNICATIONS IN COMPUTATIONAL PHYSICS
出版日期2017-05-01
卷号21期号:5页码:1429-1448
关键词Discontinuous Galerkin Method Conservative Perturbed Mhd Model
DOI10.4208/cicp.OA-2016-0095
文献子类Article
英文摘要In magnetically confined plasma research, the understandings of small and large perturbations at equilibrium are both critical for plasma controlling and steady state operation. Numerical simulations using original MHD model can hardly give clear picture for small perturbations, while non-conservative perturbed MHD model may break conservation law, and give unphysical results when perturbations grow large after long-time computation. In this paper, we present a nonlinear conservative perturbed MHD model by splitting primary variables in original MHD equations into equilibrium part and perturbed part, and apply an approach in the framework of discontinuous Galerkin (DG) spatial discretization for numerical solutions. This enables high resolution of very small perturbations, and also gives satisfactory non-smooth solutions for large perturbations, which are both broadly concerned in magnetically confined plasma research. Numerical examples demonstrate satisfactory performance of the proposed model clearly. For small perturbations, the results have higher resolution comparing with the original MHD model; for large perturbations, the non-smooth solutions match well with existing references, confirming reliability of the model for instability investigations in magnetically confined plasma numerical research.
WOS关键词ESSENTIALLY NONOSCILLATORY SCHEMES ; EQUATIONS ; LAWS
WOS研究方向Physics
语种英语
WOS记录号WOS:000398841800010
资助机构National Natural Science Foundation of China(11475219 ; National Natural Science Foundation of China(11475219 ; National Natural Science Foundation of China(11475219 ; National Natural Science Foundation of China(11475219 ; National Natural Science Foundation of China(11475219 ; National Natural Science Foundation of China(11475219 ; National Natural Science Foundation of China(11475219 ; National Natural Science Foundation of China(11475219 ; Science Foundation of the Institute of Plasma Physics ; Science Foundation of the Institute of Plasma Physics ; Science Foundation of the Institute of Plasma Physics ; Science Foundation of the Institute of Plasma Physics ; Science Foundation of the Institute of Plasma Physics ; Science Foundation of the Institute of Plasma Physics ; Science Foundation of the Institute of Plasma Physics ; Science Foundation of the Institute of Plasma Physics ; Chinese Academy of Sciences(DSJJ-15-JC02) ; Chinese Academy of Sciences(DSJJ-15-JC02) ; Chinese Academy of Sciences(DSJJ-15-JC02) ; Chinese Academy of Sciences(DSJJ-15-JC02) ; Chinese Academy of Sciences(DSJJ-15-JC02) ; Chinese Academy of Sciences(DSJJ-15-JC02) ; Chinese Academy of Sciences(DSJJ-15-JC02) ; Chinese Academy of Sciences(DSJJ-15-JC02) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; National Natural Science Foundation of China(11475219 ; National Natural Science Foundation of China(11475219 ; National Natural Science Foundation of China(11475219 ; National Natural Science Foundation of China(11475219 ; National Natural Science Foundation of China(11475219 ; National Natural Science Foundation of China(11475219 ; National Natural Science Foundation of China(11475219 ; National Natural Science Foundation of China(11475219 ; Science Foundation of the Institute of Plasma Physics ; Science Foundation of the Institute of Plasma Physics ; Science Foundation of the Institute of Plasma Physics ; Science Foundation of the Institute of Plasma Physics ; Science Foundation of the Institute of Plasma Physics ; Science Foundation of the Institute of Plasma Physics ; Science Foundation of the Institute of Plasma Physics ; Science Foundation of the Institute of Plasma Physics ; Chinese Academy of Sciences(DSJJ-15-JC02) ; Chinese Academy of Sciences(DSJJ-15-JC02) ; Chinese Academy of Sciences(DSJJ-15-JC02) ; Chinese Academy of Sciences(DSJJ-15-JC02) ; Chinese Academy of Sciences(DSJJ-15-JC02) ; Chinese Academy of Sciences(DSJJ-15-JC02) ; Chinese Academy of Sciences(DSJJ-15-JC02) ; Chinese Academy of Sciences(DSJJ-15-JC02) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; National Magnetic Confinement Fusion Science Program of China(2013GB111002) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208) ; 11405208)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/31826]  
专题合肥物质科学研究院_中科院等离子体物理研究所
作者单位1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
2.Chinese Acad Sci, Ctr Magnet Fus Theory, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Ma, Jun,Guo, Wenfeng,Yu, Zhi. Simulating Magnetohydrodynamic Instabilities with Conservative Perturbed MHD Model Using Discontinuous Galerkin Method[J]. COMMUNICATIONS IN COMPUTATIONAL PHYSICS,2017,21(5):1429-1448.
APA Ma, Jun,Guo, Wenfeng,&Yu, Zhi.(2017).Simulating Magnetohydrodynamic Instabilities with Conservative Perturbed MHD Model Using Discontinuous Galerkin Method.COMMUNICATIONS IN COMPUTATIONAL PHYSICS,21(5),1429-1448.
MLA Ma, Jun,et al."Simulating Magnetohydrodynamic Instabilities with Conservative Perturbed MHD Model Using Discontinuous Galerkin Method".COMMUNICATIONS IN COMPUTATIONAL PHYSICS 21.5(2017):1429-1448.

入库方式： OAI收割

来源：合肥物质科学研究院

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