Simulation of arc crater formation and evolution on plasma facing materials

doi:10.1016/j.nme.2021.100964

	Simulation of arc crater formation and evolution on plasma facing materials
	Wang, Baoguo 1,2,3; Zhu, Dahuan 2; Ding, Rui 2; Rohde, Volker 3; Li, Changjun 2; Chen, Junling 2
刊名	NUCLEAR MATERIALS AND ENERGY
	2021-06-01
卷号	27
关键词	Arc crater Tokamak PFMs Erosion Simulation
DOI	10.1016/j.nme.2021.100964
通讯作者	Zhu, Dahuan()
英文摘要	Arc erosion on plasma facing materials in tokamak devices is a potential source of impurities and dust in plasma. A two dimensional axially symmetric COMSOL model with heat transfer, fluid dynamics including phase transition and surface tension effect has been used to describe the formation and evolution of arc craters on plasma facing materials. The formation and evolution of arc crater on W cathode is described in detail. The energy flux loading causes melting of central area within a few nanoseconds. Due to the gradients of incident pressure, the melted layer is extruded out, and thus forms the melt jets. The differences of the arc craters on several related materials in tokamaks under the same pressure and energy flux density are also discussed. The crater temperature of W and Mo is much higher than that of Cu and Al. And, the melting volume of refractory metals W and Mo is significantly lower than that of Cu and Al. Refractory metals are more difficult to be damaged by the arcs, and more suitable for plasma facing materials.
资助项目	National Key R&D Program of China[2017YFA0402500] ; National Key R&D Program of China[2017YFE0301300] ; National Key R&D Program of China[2017YFE0302500] ; National Natural Science Foundation of China[11675219] ; National Natural Science Foundation of China[11775260] ; National Natural Science Foundation of China[11675218] ; National Natural Science Foundation of China[11975269] ; National Natural Science Foundation of China[11861131010] ; National Natural Science Foundation of China[12075279] ; CASHIPS Director's Fund[BJPY2019B01] ; Key Research Program of Frontier Sciences, CAS[ZDBS-LY-SLH010] ; Collaborative Innovation Program of Hefei Science Center, CAS[2020HSC-CIP006]
WOS关键词	VACUUM-ARC ; CATHODE ; TUNGSTEN ; MOTION
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000663579600006
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; CASHIPS Director's Fund ; Key Research Program of Frontier Sciences, CAS ; Collaborative Innovation Program of Hefei Science Center, CAS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/123838]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhu, Dahuan
作者单位	1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 3.Max Planck Inst Plasma Phys, D-85748 Garching, Germany
推荐引用方式 GB/T 7714	Wang, Baoguo,Zhu, Dahuan,Ding, Rui,et al. Simulation of arc crater formation and evolution on plasma facing materials[J]. NUCLEAR MATERIALS AND ENERGY,2021,27.
APA	Wang, Baoguo,Zhu, Dahuan,Ding, Rui,Rohde, Volker,Li, Changjun,&Chen, Junling.(2021).Simulation of arc crater formation and evolution on plasma facing materials.NUCLEAR MATERIALS AND ENERGY,27.
MLA	Wang, Baoguo,et al."Simulation of arc crater formation and evolution on plasma facing materials".NUCLEAR MATERIALS AND ENERGY 27(2021).