Time diffusion method for gyrokinetic simulation of electrostatic turbulence with kinetic electrons

doi:10.1016/j.cpc.2021.108114

	Time diffusion method for gyrokinetic simulation of electrostatic turbulence with kinetic electrons
	Zhao, PengFei 1,2; Ye, Lei 2; Xiang, Nong 2
刊名	COMPUTER PHYSICS COMMUNICATIONS
	2021-12-01
卷号	269
关键词	Gyrokinetic simulation Kinetic electron Trapped electron mode (TEM) Nonlinear turbulence Numerical diffusion
ISSN号	0010-4655
DOI	10.1016/j.cpc.2021.108114
通讯作者	Ye, Lei(lye@ipp.ac.cn) ; Xiang, Nong(xiangn@ipp.ac.cn)
英文摘要	A new method based on a time diffusion technique is developed to mitigate the numerical instability induced by the high frequency electrostatic shear Alfven wave (omega(H) mode) in the gyrokinetic simulation of electrostatic turbulence. It can preserve fully drift-kinetic electron effects and can be incorporated efficiently with explicit time integration scheme. This method has been implemented in the semi-Lagrangian gyrokinetic code NLT (Lei Ye, et al. (2016) [25]) and applied successfully to linear and nonlinear ITG/TEM turbulence simulation. Numerical results show that this time diffusion method can greatly enlarge time step size and improve numerical stability for electrostatic turbulence simulation in tokamaks. (C) 2021 Elsevier B.V. All rights reserved.
资助项目	National MCF Energy R&D Program of China[2019YFE03060000] ; National Key R&D Program of China[2017YFE0300406] ; National Natural Science Foundation of China[11975272]
WOS研究方向	Computer Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000695246200022
资助机构	National MCF Energy R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/125301]
专题	中国科学院合肥物质科学研究院
通讯作者	Ye, Lei; Xiang, Nong
作者单位	1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Zhao, PengFei,Ye, Lei,Xiang, Nong. Time diffusion method for gyrokinetic simulation of electrostatic turbulence with kinetic electrons[J]. COMPUTER PHYSICS COMMUNICATIONS,2021,269.
APA	Zhao, PengFei,Ye, Lei,&Xiang, Nong.(2021).Time diffusion method for gyrokinetic simulation of electrostatic turbulence with kinetic electrons.COMPUTER PHYSICS COMMUNICATIONS,269.
MLA	Zhao, PengFei,et al."Time diffusion method for gyrokinetic simulation of electrostatic turbulence with kinetic electrons".COMPUTER PHYSICS COMMUNICATIONS 269(2021).