Edge turbulence and divertor heat flux width simulations of Alcator C-Mod discharges using an electromagnetic two-fluid model

doi:10.1088/1741-4326/aa7d46

	Edge turbulence and divertor heat flux width simulations of Alcator C-Mod discharges using an electromagnetic two-fluid model
	Chen, B.1,2; Xu, X. Q.2; Xia, T. Y.2,3; Porkolab, M.4; Edlund, E.4; LaBombard, B.4; Terry, J.4; Hughes, J. W.4; Mao, S. F.1; Ye, M. Y.1; Wan, Y. X.1
	2017-11-01
发表期刊	NUCLEAR FUSION
摘要	The BOUT++ code has been exploited in order to improve the understanding of the role of turbulent modes in controlling edge transport and resulting scaling of the scrape-off layer (SOL) heat flux width. For the C-Mod enhanced D-alpha (EDA) H-mode discharges, BOUT++ six-field two-fluid nonlinear simulations show a reasonable agreement of upstream turbulence and divertor target heat flux behavior: (a) the simulated quasi-coherent modes show consistent characteristics of the frequency versus poloidal wave number spectra of the electromagnetic fluctuations when compared with experimental measurements: frequencies are around 60-120 kHz (experiment: about 70-110 kHz), k(theta) are around 2.0 cm(-1) which is similar to the phase contrast imaging data; (b) linear spectrum analysis is consistent with the nonlinear phase relationship calculation which indicates the dominance of resistive-ballooning modes and drift-Alfven wave instabilities; (c) the SOL heat flux width lambda(q) versus current I-p scaling is reproduced by turbulent transport: the simulations yield similar lambda q to experimental measurements within a factor of 2. However the magnitudes of divertor heat fluxes can be varied, depending on the physics models, sources and sinks, sheath boundary conditions, or flux limiting coefficient; (d) Simple estimate by the '2-point model' for lambda(q) is consistent with simulation. Moreover, blobby turbulent spreading is confirmed for these relatively high B-p shots.
文章类型	Article
关键词	Divertor Heat Flux Width Bout Plus C-mod Qcms
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1088/1741-4326/aa7d46
关键词[WOS]	SCRAPE-OFF LAYER ; CONFINEMENT ; TRANSPORT ; TOKAMAK ; POWER
收录类别	SCI
语种	英语
项目资助者	CSC(201506340019) ; CSC(201506340019) ; CSC(201506340019) ; CSC(201506340019) ; CSC(201506340019) ; CSC(201506340019) ; CSC(201506340019) ; CSC(201506340019) ; CSC(201506340019) ; CSC(201506340019) ; CSC(201506340019) ; CSC(201506340019) ; CSC(201506340019) ; CSC(201506340019) ; CSC(201506340019) ; CSC(201506340019) ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy by Lawrence Livermore National Laboratory(DE-AC52-07NA27344 ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; DoE(DE-FC02-99ER54512) ; DoE(DE-FC02-99ER54512) ; DoE(DE-FC02-99ER54512) ; DoE(DE-FC02-99ER54512) ; DoE(DE-FC02-99ER54512) ; DoE(DE-FC02-99ER54512) ; DoE(DE-FC02-99ER54512) ; DoE(DE-FC02-99ER54512) ; DoE(DE-FC02-99ER54512) ; DoE(DE-FC02-99ER54512) ; DoE(DE-FC02-99ER54512) ; DoE(DE-FC02-99ER54512) ; DoE(DE-FC02-99ER54512) ; DoE(DE-FC02-99ER54512) ; DoE(DE-FC02-99ER54512) ; DoE(DE-FC02-99ER54512) ; National Natural Science Foundation of China(11375191 ; National Natural Science Foundation of China(11375191 ; National Natural Science Foundation of China(11375191 ; National Natural Science Foundation of China(11375191 ; National Natural Science Foundation of China(11375191 ; National Natural Science Foundation of China(11375191 ; National Natural Science Foundation of China(11375191 ; National Natural Science Foundation of China(11375191 ; National Natural Science Foundation of China(11375191 ; National Natural Science Foundation of China(11375191 ; National Natural Science Foundation of China(11375191 ; National Natural Science Foundation of China(11375191 ; National Natural Science Foundation of China(11375191 ; National Natural Science Foundation of China(11375191 ; National Natural Science Foundation of China(11375191 ; National Natural Science Foundation of China(11375191 ; LLNL-JRNL-722400) ; LLNL-JRNL-722400) ; LLNL-JRNL-722400) ; LLNL-JRNL-722400) ; LLNL-JRNL-722400) ; LLNL-JRNL-722400) ; LLNL-JRNL-722400) ; LLNL-JRNL-722400) ; LLNL-JRNL-722400) ; LLNL-JRNL-722400) ; LLNL-JRNL-722400) ; LLNL-JRNL-722400) ; LLNL-JRNL-722400) ; LLNL-JRNL-722400) ; LLNL-JRNL-722400) ; LLNL-JRNL-722400) ; 11405215 ; 11405215 ; 11405215 ; 11405215 ; 11405215 ; 11405215 ; 11405215 ; 11405215 ; 11405215 ; 11405215 ; 11405215 ; 11405215 ; 11405215 ; 11405215 ; 11405215 ; 11405215 ; 11675217) ; 11675217) ; 11675217) ; 11675217) ; 11675217) ; 11675217) ; 11675217) ; 11675217) ; 11675217) ; 11675217) ; 11675217) ; 11675217) ; 11675217) ; 11675217) ; 11675217) ; 11675217)
WOS研究方向	Physics
WOS类目	Physics, Fluids & Plasmas
WOS记录号	WOS:000407442100003
引用统计	被引频次：36[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/334002/33576
专题	中科院等离子体物理研究所
作者单位	1.Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei, Anhui, Peoples R China 2.Lawrence Livermore Natl Lab, Livermore, CA 94550 USA 3.Chinese Acad Sci, Inst Plasma Phys, Hefei, Anhui, Peoples R China 4.MIT, Plasma Sci & Fus Ctr, 77 Massachusetts Ave, Cambridge, MA 02139 USA
推荐引用方式 GB/T 7714	Chen, B.,Xu, X. Q.,Xia, T. Y.,et al. Edge turbulence and divertor heat flux width simulations of Alcator C-Mod discharges using an electromagnetic two-fluid model[J]. NUCLEAR FUSION,2017,57(11).
APA	Chen, B..,Xu, X. Q..,Xia, T. Y..,Porkolab, M..,Edlund, E..,...&Wan, Y. X..(2017).Edge turbulence and divertor heat flux width simulations of Alcator C-Mod discharges using an electromagnetic two-fluid model.NUCLEAR FUSION,57(11).
MLA	Chen, B.,et al."Edge turbulence and divertor heat flux width simulations of Alcator C-Mod discharges using an electromagnetic two-fluid model".NUCLEAR FUSION 57.11(2017).