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Title: Effect of anisotropic thermal transport on the resistive plasma response to resonant magnetic perturbation field

Abstract

Plasma response to the resonant magnetic perturbation (RMP) field is numerically investigated by an extended toroidal fluid model, which includes anisotropic thermal transport physics parallel and perpendicular to the total magnetic field. The thermal transport is found to be effective in eliminating the toroidal average curvature induced plasma screening (the so called Glasser-Green-Johnson, GGJ screening) at slow toroidal flow regime, whilst having minor effect on modifying the conventional plasma screening regimes at faster flow. Furthermore, this physics effect of interaction between thermal transport and GGJ screening is attributed to the modification of the radial structure of the shielding current, resulted from the plasma response to the applied field. The modification of the plasma response (shielding current, response field, plasma displacement and the perturbed velocity) also has direct consequence on the toroidal torques produced by RMP. These modelling results show that thermal transport reduces the resonant electromagnetic torque as well as the torque associated with the Reynolds stress, but enhances the neoclassical toroidal viscous torque at slow plasma flow.

Authors:
 [1];  [2];  [3]
  1. Southwestern Inst. of Physics, Chengdu (China); Tsinghua Univ., Beijing (China). Dept. of Engineering Physics
  2. Southwestern Inst. of Physics, Chengdu (China); General Atomics, San Diego, CA (United States)
  3. Tsinghua Univ., Beijing (China). Dept. of Engineering Physics
Publication Date:
Research Org.:
General Atomics, San Diego, CA (United States); Southwestern Institute of Physics, Chengdu (China); Tsinghua University, Beijing (China)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1399659
Report Number(s):
DOE-GA-54309
Journal ID: ISSN 1070-664X; TRN: US1703207
Grant/Contract Number:  
FG02-95ER54309; FC02-04ER54698; 11605046; 11505050; 2015GB105004; 2015GB104004
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 24; Journal Issue: 10; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; anisotropic thermal transport; resistive plasma response; resonant magnetic perturbation(RMP); MARS-F

Citation Formats

Bai, Xue, Liu, Yueqiang, and Gao, Zhe. Effect of anisotropic thermal transport on the resistive plasma response to resonant magnetic perturbation field. United States: N. p., 2017. Web. doi:10.1063/1.5003664.
Bai, Xue, Liu, Yueqiang, & Gao, Zhe. Effect of anisotropic thermal transport on the resistive plasma response to resonant magnetic perturbation field. United States. doi:10.1063/1.5003664.
Bai, Xue, Liu, Yueqiang, and Gao, Zhe. Thu . "Effect of anisotropic thermal transport on the resistive plasma response to resonant magnetic perturbation field". United States. doi:10.1063/1.5003664. https://www.osti.gov/servlets/purl/1399659.
@article{osti_1399659,
title = {Effect of anisotropic thermal transport on the resistive plasma response to resonant magnetic perturbation field},
author = {Bai, Xue and Liu, Yueqiang and Gao, Zhe},
abstractNote = {Plasma response to the resonant magnetic perturbation (RMP) field is numerically investigated by an extended toroidal fluid model, which includes anisotropic thermal transport physics parallel and perpendicular to the total magnetic field. The thermal transport is found to be effective in eliminating the toroidal average curvature induced plasma screening (the so called Glasser-Green-Johnson, GGJ screening) at slow toroidal flow regime, whilst having minor effect on modifying the conventional plasma screening regimes at faster flow. Furthermore, this physics effect of interaction between thermal transport and GGJ screening is attributed to the modification of the radial structure of the shielding current, resulted from the plasma response to the applied field. The modification of the plasma response (shielding current, response field, plasma displacement and the perturbed velocity) also has direct consequence on the toroidal torques produced by RMP. These modelling results show that thermal transport reduces the resonant electromagnetic torque as well as the torque associated with the Reynolds stress, but enhances the neoclassical toroidal viscous torque at slow plasma flow.},
doi = {10.1063/1.5003664},
journal = {Physics of Plasmas},
number = 10,
volume = 24,
place = {United States},
year = {Thu Sep 21 00:00:00 EDT 2017},
month = {Thu Sep 21 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
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