Plasma and Fusion Research

Volume 13, 3403022 (2018)

Regular Articles

Benchmarking of B2 Code with a One-Dimensional Plasma Fluid Model Incorporating Anisotropic Ion Pressures on Simple Mirror Configurations
Satoshi TOGO, Dirk REISER1), Petra BÖRNER1), Mizuki SAKAMOTO, Naomichi EZUMI and Yousuke NAKASHIMA
Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
1)
Forschungszentrum Jülich GmbH, IEK-Plasmaphysik, Jülich 52425, Germany
(Received 28 December 2017 / Accepted 25 February 2018 / Published 10 April 2018)

Abstract

A plasma fluid code B2 has been benchmarked with a one-dimensional plasma fluid model incorporating the anisotropic ion pressures (AIP model) on simple mirror configurations. In a low collisionality case, profiles of plasma parameters of the B2 code deviate from those of the AIP model. The validity of the viscous-flux approximation is investigated by direct comparisons with the anisotropic part of the ion pressure indicating the invalidity of the viscous-flux approximation is considered to be responsible to deviations of profiles. In addition, supersonic plasma flows downstream from the mirror throat are observed.

Keywords

plasma fluid model, B2 code, anisotropic ion pressures, viscous-flux approximation, diverging magnetic field, supersonic plasma flow

DOI: 10.1585/pfr.13.3403022

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