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

doi:10.1016/j.cpc.2021.108114

HFCAS OpenIR

	Time diffusion method for gyrokinetic simulation of electrostatic turbulence with kinetic electrons
	Zhao, PengFei 1,2; Ye, Lei1 ; Xiang, Nong1
	2021-12-01
发表期刊	COMPUTER PHYSICS COMMUNICATIONS
ISSN	0010-4655
通讯作者	Ye, Lei(lye@ipp.ac.cn) ; Xiang, Nong(xiangn@ipp.ac.cn)
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.
关键词	Gyrokinetic simulation Kinetic electron Trapped electron mode (TEM) Nonlinear turbulence Numerical diffusion
DOI	10.1016/j.cpc.2021.108114
收录类别	SCI
语种	英语
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]
项目资助者	National MCF Energy R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China
WOS研究方向	Computer Science ; Physics
WOS类目	Computer Science, Interdisciplinary Applications ; Physics, Mathematical
WOS记录号	WOS:000695246200022
出版者	ELSEVIER
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/125302
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.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, 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).