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

Bai, Xue; Liu, Yueqiang; Gao, Zhe

doi:10.1063/1.5003664

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

Journal Article · Thu Sep 21 00:00:00 EDT 2017 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.5003664· OSTI ID:1399659

Bai, Xue ^[1]; Liu, Yueqiang ^[2]; Gao, Zhe ^[3]

Southwestern Inst. of Physics, Chengdu (China); Tsinghua Univ., Beijing (China). Dept. of Engineering Physics; Southwestern Institute of Physics, PO Box 432, Chengdu 610041, China; Department of Engineering Physics, Tsinghua University, Beijing 100084, China
Southwestern Inst. of Physics, Chengdu (China); General Atomics, San Diego, CA (United States)
Tsinghua Univ., Beijing (China). Dept. of Engineering Physics

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.

View Accepted Manuscript (DOE)

Research Organization:: General Atomics, San Diego, CA (United States); Southwestern Institute of Physics, Chengdu (China); Tsinghua University, Beijing (China)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: FC02-04ER54698; FG02-95ER54309

OSTI ID:: 1399659

Report Number(s):: DOE-GA--54309

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 10 Vol. 24; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
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anisotropic thermal transport
resistive plasma response
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Effect of anisotropic thermal transport on the resistive plasma response to resonant magnetic perturbation field

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