Modeling of toroidal torques exerted by internal kink instability in a tokamak plasma
Abstract
Toroidal modeling efforts are initiated to systematically compute and compare various toroidal torques, exerted by an unstable internal kink in a tokamak plasma, using the MARS-F/K/Q suite of codes. The torques considered here include the resonant electromagnetic torque due to the Maxwell stress (the EM or JXB torque), the neoclassical toroidal viscous (NTV) torque, and the torque associated with the Reynolds stress. Numerical results show that the relative magnitude of the net resonant electromagnetic and the Reynolds stress torques increases with the equilibrium flow speed of the plasma, whilst the net NTV torque follows the opposite trend. The global flow shear sensitively affects the Reynolds stress torque, but not the electromagnetic and the NTV torques. Detailed examinations reveal dominant contributions to the Maxwell and Reynolds stress torques, in terms of the poloidal harmonic numbers of various perturbation fields, as well as their relative toroidal phasing.
- Authors:
-
[1];
- Southwestern Inst. of Physics, Chengdu (China)
- Southwestern Inst. of Physics, Chengdu (China); General Atomics, San Diego, CA (United States)
- Southwestern Inst. of Physics, Chengdu (China); Tsinghua Univ., Beijing (China)
- Publication Date:
- Research Org.:
- General Atomics, San Diego, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1535333
- Grant/Contract Number:
- FC02-04ER54698; FG02-95ER54309
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 24; Journal Issue: 8; 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; Physics
Citation Formats
Zhang, N., Liu, Y. Q., Yu, D. L., Wang, S., Xia, G. L., Dong, G. Q., and Bai, X. Modeling of toroidal torques exerted by internal kink instability in a tokamak plasma. United States: N. p., 2017.
Web. doi:10.1063/1.4995271.
Zhang, N., Liu, Y. Q., Yu, D. L., Wang, S., Xia, G. L., Dong, G. Q., & Bai, X. Modeling of toroidal torques exerted by internal kink instability in a tokamak plasma. United States. https://doi.org/10.1063/1.4995271
Zhang, N., Liu, Y. Q., Yu, D. L., Wang, S., Xia, G. L., Dong, G. Q., and Bai, X. Mon .
"Modeling of toroidal torques exerted by internal kink instability in a tokamak plasma". United States. https://doi.org/10.1063/1.4995271. https://www.osti.gov/servlets/purl/1535333.
@article{osti_1535333,
title = {Modeling of toroidal torques exerted by internal kink instability in a tokamak plasma},
author = {Zhang, N. and Liu, Y. Q. and Yu, D. L. and Wang, S. and Xia, G. L. and Dong, G. Q. and Bai, X.},
abstractNote = {Toroidal modeling efforts are initiated to systematically compute and compare various toroidal torques, exerted by an unstable internal kink in a tokamak plasma, using the MARS-F/K/Q suite of codes. The torques considered here include the resonant electromagnetic torque due to the Maxwell stress (the EM or JXB torque), the neoclassical toroidal viscous (NTV) torque, and the torque associated with the Reynolds stress. Numerical results show that the relative magnitude of the net resonant electromagnetic and the Reynolds stress torques increases with the equilibrium flow speed of the plasma, whilst the net NTV torque follows the opposite trend. The global flow shear sensitively affects the Reynolds stress torque, but not the electromagnetic and the NTV torques. Detailed examinations reveal dominant contributions to the Maxwell and Reynolds stress torques, in terms of the poloidal harmonic numbers of various perturbation fields, as well as their relative toroidal phasing.},
doi = {10.1063/1.4995271},
journal = {Physics of Plasmas},
number = 8,
volume = 24,
place = {United States},
year = {Mon Jul 24 00:00:00 EDT 2017},
month = {Mon Jul 24 00:00:00 EDT 2017}
}
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Works referencing / citing this record:
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