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Screening of extern...
Screening of external magnetic perturbation fields due to sheared plasma flow
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- Li, L. (författare)
- Forschungszentrum Jülich GmbH,Ministry of Education China,Donghua University
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- Liu, Yueqiang, 1971 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Liang, Y. (författare)
- Chinese Academy of Sciences,Donghua University,Forschungszentrum Jülich GmbH
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- Wang, N. (författare)
- Huazhong University of Science and Technology,Forschungszentrum Jülich GmbH
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- Luan, Q. (författare)
- Dalian University of Technology
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- Zhong, F. C. (författare)
- Ministry of Education China,Donghua University
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- Liu, Y. (författare)
- Dalian University of Technology
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(creator_code:org_t)
- 2016-07-29
- 2016
- Engelska.
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Ingår i: Nuclear Fusion. - : IOP Publishing. - 1741-4326 .- 0029-5515. ; 56:9
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http://publications....
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Within the single fluid resistive magnetohydrodynamic model, systematic toroidal modelling efforts are devoted to investigate the plasma response induced screening of the applied external 3D magnetic field perturbations in the presence of sheared toroidal flow. One particular issue of interest is addressed, when the local flow speed approaches zero at the perturbation rational surface inside the plasma. Subtle screening physics, associated with the favourable averaged toroidal curvature effect (the GGJ effect (Glasser et al 1975 Phys. Fluids 7 875)), is found to play an essential role during slow flow near the rational surface by enhancing the screening at reduced flow. A strong cancellation effect between different terms of Ohm's law is discovered, leading to different screening physics in the GGJ regime, as compared to that of conventional screening of the typical resistive-inertial regime occurring at faster flow. These modelling results may be applicable to interpret certain mode locking experiments, as well as type-I edge localized mode suppression experiments, with resonant magnetic field perturbations being applied to tokamak plasmas at low input toroidal torque.
Ämnesord
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Nyckelord
- MARS-F code
- screening effect
- resonant magnetic field
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- art (ämneskategori)
- ref (ämneskategori)
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