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Title: Impact of higher-order flows in the moment equations on Pfirsch-Schlüter friction coefficients

The impact of the higher-order flows in the moment approach on an estimate of the friction coefficients is numerically examined. The higher-order flows are described by the lower-order hydrodynamic flows using the collisional plasma assumption. Their effects have not been consistently taken into account thus far in the widely used neoclassical transport codes based on the moment equations in terms of the Pfirsch-Schlüter flux. Due to numerically solving the friction-flow matrix without using the small-mass ratio expansion, it is clearly revealed that incorporating the higher-order flow effects is of importance especially for plasmas including multiple hydrogenic ions and other lighter species with similar masses.
Authors:
 [1]
  1. Japan Atomic Energy Agency, Naka, Ibaraki 311-0193 (Japan)
Publication Date:
OSTI Identifier:
22303639
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COLLISIONAL PLASMA; EQUATIONS; EXPANSION; FRICTION; FRICTION FACTOR; MASS; MATRICES; NEOCLASSICAL TRANSPORT THEORY