Nonlinear simulation of edge localized mode with pressure profile modified by pellet injection through a BOUT++ three-field MHD model

doi:10.1016/j.nme.2020.100888

	Nonlinear simulation of edge localized mode with pressure profile modified by pellet injection through a BOUT++ three-field MHD model
	Li, Mao 1; Sun, Jizhong 1; Wang, Yumin 2; Xia, Tianyang 2
刊名	NUCLEAR MATERIALS AND ENERGY
	2021-03-01
卷号	26
关键词	Edge localized mode Pellet injection BOUT++ MHD code
DOI	10.1016/j.nme.2020.100888
通讯作者	Sun, Jizhong(jsun@dlut.edu.cn)
英文摘要	A BOUT++ three-field MHD model is applied to study the effect of the pedestal pressure profile modified by the pellet injection from the low field side on the nonlinear behaviors of ELM. The linear simulation shows that the growth rates of all toroidal modes can be enhanced regardless of the deposition location and are more affected by the pellet atoms depositing in the steep pedestal region. From the nonlinear simulation, a threshold behavior for influencing the natural ELM by the ablated pellet in terms of the rate of the modified pressure over the unperturbed one at the most affected position (R-p = P-mod,P-MAP/P-0,P-MAP) is demonstrated when the pellet deposits its atoms on the pedestal top. In contrast, when the pellet deposits its atoms within the steep pedestal region, the ELM size is increased at low and high R-p but decreased in an intermediate range. This result can perhaps explain the probabilistic behavior of ELM triggering by small pellet injection on EAST observed in previous experimental results.
资助项目	National Key R&D Program of China[2017YFE0301100] ; National Key R&D Program of China[2019YFE03030004] ; National Natural Science Foundation of China[11575039]
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000628782500023
资助机构	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/334002/121385]
专题	中国科学院合肥物质科学研究院
通讯作者	Sun, Jizhong
作者单位	1.Dalian Univ Technol, Minister Educ, Key Lab Mat Modificat Laser Ion & Electron Beams, Sch Phys, Dalian 116024, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Li, Mao,Sun, Jizhong,Wang, Yumin,et al. Nonlinear simulation of edge localized mode with pressure profile modified by pellet injection through a BOUT++ three-field MHD model[J]. NUCLEAR MATERIALS AND ENERGY,2021,26.
APA	Li, Mao,Sun, Jizhong,Wang, Yumin,&Xia, Tianyang.(2021).Nonlinear simulation of edge localized mode with pressure profile modified by pellet injection through a BOUT++ three-field MHD model.NUCLEAR MATERIALS AND ENERGY,26.
MLA	Li, Mao,et al."Nonlinear simulation of edge localized mode with pressure profile modified by pellet injection through a BOUT++ three-field MHD model".NUCLEAR MATERIALS AND ENERGY 26(2021).