Journal Article

PreJuSER-42806

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Calculation of 2D profiles for the plasma and electric field in the boundary layer of the TEXTOR-94 Tokamak

Gerhauser, H.FZJ* ; Zgorski, R. ; Claaßen, H. A.FZJ* ; Lehnen, M.FZJ*

2001
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/S0022-3115(00)00602-4

Abstract: An improved version of the 2D multifluid code TECXY is used to study the plasma parameters and the electric field in the boundary layer of the TEXTOR-94 tokamak. An anomalous perpendicular sheer viscosity eta (perpendicular to) is incorporated into the ion momentum balance which allows to fulfil the global (magnetic surface averaged) ambipolarity constraint for the radial electric current, and to determine the electric field in the transition layer by a second-order ordinary differential equation for E-r(r). The code modelling results suggest the existence of a narrow global circulation layer for the poloidal plasma velocity just inside the separatrix which is connected with a negative electric field spike. PI proper choice of eta (perpendicular to) gives better agreement with experimental velocity profiles. (C) 2001 Elsevier Science B.V. All rights reserved.

Keyword(s): J ; 2D fluid code (auto) ; plasma edge (auto) ; radial electric field (auto) ; TEXTOR (auto) ; modelling (auto)

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Institutsbereich I (IPP-1)
2. Institutsbereich II (IPP-2)

Research Program(s):

1. Teilchen- und Energietransport in der Plasmarandschicht (22.88.5)

Appears in the scientific report 2001

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