Impact of higher-order flows in the moment equations on Pfirsch-Schl$"u$ter friction coefficients
本多 充
Honda, Mitsuru
In fusion plasmas, the impact of the higher-order flows in the moment approach of the neoclassical transport theory on an estimate of the friction coefficients is examined multilaterally. Their effects have not been consistently taken into account thus far in the widely used neoclassical transport codes based on the moment equations when diffusivities are calculated in the collision-dominated Pfirsch-Schl$"u$ter regime. Due to the matrix element expressions applicable to arbitrary mass and temperature ratios and the rigorous way of numerically calculating the higher-order flows and the resultant friction coefficients, it is clearly revealed that incorporating the higher-order flow effects precisely is of great importance especially for plasmas including multiple hydrogenic ions and other lighter species with similar masses.
使用言語 : English
掲載資料名 : Physics of Plasmas
: 21
: 9
ページ数 : p.092508_1 - 092508_10
発行年月 : 2014/09
出版社名 : American Institute of Physics
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登録番号 : AA20140165
抄録集掲載番号 : 42001318
論文投稿番号 : 14957
Accesses  (From Jun. 2, 2014)
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