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Simulation Study of Detached Plasmas by Using One‐Dimensional SOL‐Divertor Fluid Code with Virtual Divertor Model
Author(s) -
Togo S.,
Takizuka T.,
Nakamura M.,
Hoshino K.,
Ibano K.,
Lang T. L.,
Ogawa Y.
Publication year - 2016
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201610067
Subject(s) - divertor , plasma , heat flux , mechanics , mach number , physics , stagnation point , materials science , atomic physics , anisotropy , flux (metallurgy) , computational physics , heat transfer , nuclear physics , tokamak , optics , metallurgy
The detached plasmas due to the volume recombination are studied by using one‐dimensional (1D) scrape‐off‐layer‐divertor (SOL‐DIV) plasma fluid code with virtual divertor (VD) model. By introducing the anisotropic ion temperature, the parallel momentum transport equation becomes the first‐order differential and the Mach number at the sheath entrance is determined self‐consistently by the upstream condition. The total particle flux at the divertor plates and the flux amplification factors are shown as functions of the plasma density at the stagnation point and the dependence of these parameters on the heat flux from the core plasma, radial width of the flux tube in the divetor region and the strength of the impurity radiation is investigated. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)