@article{oai:nifs-repository.repo.nii.ac.jp:00000085,
 author = {KAWAMURA,  Gakushi and TOMITA,  Yukihiro and KOBAYASHI,  Masahiro and TSKHAKAYA,  David},
 journal = {Journal of Plasma and Fusion Research SERIES},
 month = {Sep},
 note = {One dimensional plasma model of the divertor leg in Large Helical Device is presented. The plasma is
described by stationary fluid equations for electron and ion with particle source by ionization and momentum
sink by charge exchange with neutrals. Also a simple model of neutral atoms and radiative cooling by impurities
are included. This model is intended to be employed in an integrated simulation where an equilibrium of the
upstream plasma and plasma-surface interactions at the divertor plate are solved in different numerical codes
separately. From the computational point of view, the numerical code solving the fluid equations for the divertor
leg is developed for 1D flux tube where the boundary conditions of both ends are specified. The calculation time
is much less than 0.1 seconds and sufficiently fast to use in future integrated simulations. Solutions for typical
plasma parameters are shown in the paper. In the results, a density peaking near the wall was observed for the
plasma of high density. The peaking is caused by the ion heat conduction and the collisional presheath and its
sharpness increases for higher density. Also solutions for different impurity density profiles were obtained and
reduction of the electron energy flux and temperature were observed. However, their effects were small and
qualitative changes were not observed.},
 title = {1D fluid model of plasma profiles in the LHD divertor leg},
 volume = {Vol.8},
 year = {2009}
}