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Two‐Dimensional Divertor Modeling and Scaling Laws
Author(s) -
Catto Peter J.,
Krasheninnikov S. I.,
Connor J. W.,
Knoll D. A.
Publication year - 1996
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.2150360255
Subject(s) - divertor , scaling , dimensionless quantity , benchmark (surveying) , tokamak , similarity (geometry) , physics , mechanics , statistical physics , steady state (chemistry) , boundary value problem , boundary (topology) , perpendicular , plasma , computer science , mathematical analysis , mathematics , geometry , nuclear physics , chemistry , geodesy , quantum mechanics , artificial intelligence , image (mathematics) , geography
Two‐dimensional numerical models of divertors contain large numbers of dimensionless parameters that must be varied to investigate all operating regimes of interest. To simplify the task and gain insight into divertor operation, we employ similarity techniques to investigate whether model systems of equations plus boundary conditions in the steady state admit scaling transformations that lead to useful divertor similarity scaling laws. A short mean free path neutral‐plasma model of the divertor region below the x‐point is adopted in which all perpendicular transport is due to the neutrals. We illustrate how the results can be used to benchmark large computer simulations by employing a modified version of UEDGE which contains a neutral fluid model.