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@ARTICLE{Tokar:173217,
author = {Tokar, Mikhail and Koltunov, Mikhail},
title = {'{S}hell' approach to modeling of impurity spreading from
localized sources in plasma},
journal = {International journal of modeling, simulation, and
scientific computing},
volume = {05},
number = {supp01},
issn = {1793-9623},
address = {Singapore {[u.a.]},
publisher = {World Scientific},
reportid = {FZJ-2014-06628},
pages = {1441005},
year = {2014},
abstract = {In fusion devices, strongly localized intensive sources of
impurities may arise unexpectedly or can be created
deliberately through impurity injection. The spreading of
impurities from such sources is essentially
three-dimensional and nonstationary phenomenon involving
physical processes of extremely different time scales.
Numerical modeling of such events is still a very
challenging task even by using most modern computers. To
diminish the calculation time drastically a "shell" model
has been elaborated that allows to reduce equations for
particle, parallel momentum and energy balances of various
ion species to one-dimensional equations describing the time
evolution of radial profiles for several most characteristic
parameters. The assumptions of the "shell" approach are
verified by comparing its predictions with a numerical
solution of one-dimensional time-dependent transport
equations.},
cin = {IEK-4},
ddc = {004},
cid = {I:(DE-Juel1)IEK-4-20101013},
pnm = {136 - Plasma theory (POF2-136)},
pid = {G:(DE-HGF)POF2-136},
typ = {PUB:(DE-HGF)16},
doi = {10.1142/S1793962314410050},
url = {https://juser.fz-juelich.de/record/173217},
}