Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이정표 | - |
dc.date.accessioned | 2020-09-18T06:00:43Z | - |
dc.date.available | 2020-09-18T06:00:43Z | - |
dc.date.issued | 2019-10 | - |
dc.identifier.citation | PLASMA PHYSICS AND CONTROLLED FUSION, v. 61, no. 10, article no. 105007 | en_US |
dc.identifier.issn | 0741-3335 | - |
dc.identifier.issn | 1361-6587 | - |
dc.identifier.uri | https://iopscience.iop.org/article/10.1088/1361-6587/ab3a7f | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/153999 | - |
dc.description.abstract | We investigate the impact of toroidal rotation on axisymmetric MHD equilibria analytically and numerically, with a focus on the change of the safety factor and magnetic shear induced by the flow. When the toroidal rotation is radially localized by an external momentum source, the pressure due to the flow can change the magnetic configuration and the safety factor significantly, even for subsonic flows. Specifically, when the radial profile of the safety factor is not conserved throughout a discharge, toroidal flow can lead to magnetic shear reversal for the equilibrium magnetic field, and we find that the magnitude of the negative shear is amplified for cross sections with large negative triangularity. This has implications for both magnetohydrodynamic stability and anomalous transport. Furthermore, even when the magnetic flux is conserved and the radial magnetic shear profile does not change, the toroidal flow can modify the local magnetic shear. The poloidal variations of the local magnetic shear due to the flow can stabilize magnetohydrodynamic ballooning modes. | en_US |
dc.description.sponsorship | This research was supported by R&D Program of "Development of ITER non-procurement key-technologies (IN19042)" through the National Fusion Research Institute of Korea (NFRI) funded by the Government funds. A.J.C. was partially supported by the U.S. Department of Energy, Office of Science, Fusion Energy Sciences under Award Nos. DE-FG02-86ER53223 and DE-SC0012398. | en_US |
dc.language.iso | en | en_US |
dc.publisher | IOP PUBLISHING LTD | en_US |
dc.subject | tokamak | en_US |
dc.subject | toroidal rotation | en_US |
dc.subject | MHD equilibrium | en_US |
dc.subject | magnetic shear | en_US |
dc.subject | plasma equilibrium shape | en_US |
dc.title | Magnetic shear due to localized toroidal flow shear in tokamaks | en_US |
dc.type | Article | en_US |
dc.relation.no | 10 | - |
dc.relation.volume | 61 | - |
dc.identifier.doi | 10.1088/1361-6587/ab3a7f | - |
dc.relation.page | 105007-105020 | - |
dc.relation.journal | PLASMA PHYSICS AND CONTROLLED FUSION | - |
dc.contributor.googleauthor | Lee, Jungpyo | - |
dc.contributor.googleauthor | Cerfon, Antoine | - |
dc.relation.code | 2019001817 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF NUCLEAR ENGINEERING | - |
dc.identifier.pid | jungpyo | - |
dc.identifier.researcherID | E-4796-2018 | - |
dc.identifier.orcid | https://orcid.org/0000-0002-4382-4515 | - |
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