Gyrokinetic simulations of the effects of magnetic islands on microturbulence in KSTAR
Gyrokinetic simulations are utilized to study effects of magnetic islands on the ion temperature gradient (ITG) turbulence in the KSTAR tokamak with resonant magnetic perturbations. Simulations show that the transport is controlled by the nonlinear interactions between the ITG turbulence and self-ge...
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| creator | Wei, Xishuo Nicolau, Javier H Choi, Gyungjin Lin, Zhihong Yang, SeongMoo Kim, SangKyeun Lee, WooChang Zhao, Chen Cote, Tyler Park, JongKyu Orlov, Dmitri |
| description | Gyrokinetic simulations are utilized to study effects of magnetic islands on
the ion temperature gradient (ITG) turbulence in the KSTAR tokamak with
resonant magnetic perturbations. Simulations show that the transport is
controlled by the nonlinear interactions between the ITG turbulence and
self-generated vortex flows and zonal flows, leading to an anisotropic
structure of fluctuation and transport on the poloidal plane and in the
toroidal direction. Magnetic islands greatly enhance turbulent transport of
both particle and heat. The turbulent transport exhibits variations in the
toroidal direction, with transport through the resonant layer near the island
X-point being enhanced when the X-point is located at the outer mid-plane. A
quantitative agreement is shown between simulations and KSTAR experiments in
terms of time frequency and perpendicular wavevector spectrum. |
| doi_str_mv | 10.48550/arxiv.2412.09522 |
| format | Article |
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the ion temperature gradient (ITG) turbulence in the KSTAR tokamak with
resonant magnetic perturbations. Simulations show that the transport is
controlled by the nonlinear interactions between the ITG turbulence and
self-generated vortex flows and zonal flows, leading to an anisotropic
structure of fluctuation and transport on the poloidal plane and in the
toroidal direction. Magnetic islands greatly enhance turbulent transport of
both particle and heat. The turbulent transport exhibits variations in the
toroidal direction, with transport through the resonant layer near the island
X-point being enhanced when the X-point is located at the outer mid-plane. A
quantitative agreement is shown between simulations and KSTAR experiments in
terms of time frequency and perpendicular wavevector spectrum.</description><identifier>DOI: 10.48550/arxiv.2412.09522</identifier><language>eng</language><subject>Physics - Plasma Physics</subject><creationdate>2024-12</creationdate><rights>http://creativecommons.org/licenses/by/4.0</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>228,230,780,885</link.rule.ids><linktorsrc>$$Uhttps://arxiv.org/abs/2412.09522$$EView_record_in_Cornell_University$$FView_record_in_$$GCornell_University$$Hfree_for_read</linktorsrc><backlink>$$Uhttps://doi.org/10.48550/arXiv.2412.09522$$DView paper in arXiv$$Hfree_for_read</backlink></links><search><creatorcontrib>Wei, Xishuo</creatorcontrib><creatorcontrib>Nicolau, Javier H</creatorcontrib><creatorcontrib>Choi, Gyungjin</creatorcontrib><creatorcontrib>Lin, Zhihong</creatorcontrib><creatorcontrib>Yang, SeongMoo</creatorcontrib><creatorcontrib>Kim, SangKyeun</creatorcontrib><creatorcontrib>Lee, WooChang</creatorcontrib><creatorcontrib>Zhao, Chen</creatorcontrib><creatorcontrib>Cote, Tyler</creatorcontrib><creatorcontrib>Park, JongKyu</creatorcontrib><creatorcontrib>Orlov, Dmitri</creatorcontrib><title>Gyrokinetic simulations of the effects of magnetic islands on microturbulence in KSTAR</title><description>Gyrokinetic simulations are utilized to study effects of magnetic islands on
the ion temperature gradient (ITG) turbulence in the KSTAR tokamak with
resonant magnetic perturbations. Simulations show that the transport is
controlled by the nonlinear interactions between the ITG turbulence and
self-generated vortex flows and zonal flows, leading to an anisotropic
structure of fluctuation and transport on the poloidal plane and in the
toroidal direction. Magnetic islands greatly enhance turbulent transport of
both particle and heat. The turbulent transport exhibits variations in the
toroidal direction, with transport through the resonant layer near the island
X-point being enhanced when the X-point is located at the outer mid-plane. A
quantitative agreement is shown between simulations and KSTAR experiments in
terms of time frequency and perpendicular wavevector spectrum.</description><subject>Physics - Plasma Physics</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNpjYJA0NNAzsTA1NdBPLKrILNMzMjE00jOwNDUy4mQIc68sys_OzEstyUxWKM7MLc1JLMnMzytWyE9TKMlIVUhNS0tNLgFzcxPTIcoyi3MS81KAYnkKuZnJRfklpUVJpTmpecmpCpl5Ct7BIY5BPAysaYk5xam8UJqbQd7NNcTZQxfsgviCoszcxKLKeJBL4sEuMSasAgDVXT8I</recordid><startdate>20241212</startdate><enddate>20241212</enddate><creator>Wei, Xishuo</creator><creator>Nicolau, Javier H</creator><creator>Choi, Gyungjin</creator><creator>Lin, Zhihong</creator><creator>Yang, SeongMoo</creator><creator>Kim, SangKyeun</creator><creator>Lee, WooChang</creator><creator>Zhao, Chen</creator><creator>Cote, Tyler</creator><creator>Park, JongKyu</creator><creator>Orlov, Dmitri</creator><scope>GOX</scope></search><sort><creationdate>20241212</creationdate><title>Gyrokinetic simulations of the effects of magnetic islands on microturbulence in KSTAR</title><author>Wei, Xishuo ; Nicolau, Javier H ; Choi, Gyungjin ; Lin, Zhihong ; Yang, SeongMoo ; Kim, SangKyeun ; Lee, WooChang ; Zhao, Chen ; Cote, Tyler ; Park, JongKyu ; Orlov, Dmitri</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-arxiv_primary_2412_095223</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Physics - Plasma Physics</topic><toplevel>online_resources</toplevel><creatorcontrib>Wei, Xishuo</creatorcontrib><creatorcontrib>Nicolau, Javier H</creatorcontrib><creatorcontrib>Choi, Gyungjin</creatorcontrib><creatorcontrib>Lin, Zhihong</creatorcontrib><creatorcontrib>Yang, SeongMoo</creatorcontrib><creatorcontrib>Kim, SangKyeun</creatorcontrib><creatorcontrib>Lee, WooChang</creatorcontrib><creatorcontrib>Zhao, Chen</creatorcontrib><creatorcontrib>Cote, Tyler</creatorcontrib><creatorcontrib>Park, JongKyu</creatorcontrib><creatorcontrib>Orlov, Dmitri</creatorcontrib><collection>arXiv.org</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Wei, Xishuo</au><au>Nicolau, Javier H</au><au>Choi, Gyungjin</au><au>Lin, Zhihong</au><au>Yang, SeongMoo</au><au>Kim, SangKyeun</au><au>Lee, WooChang</au><au>Zhao, Chen</au><au>Cote, Tyler</au><au>Park, JongKyu</au><au>Orlov, Dmitri</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Gyrokinetic simulations of the effects of magnetic islands on microturbulence in KSTAR</atitle><date>2024-12-12</date><risdate>2024</risdate><abstract>Gyrokinetic simulations are utilized to study effects of magnetic islands on
the ion temperature gradient (ITG) turbulence in the KSTAR tokamak with
resonant magnetic perturbations. Simulations show that the transport is
controlled by the nonlinear interactions between the ITG turbulence and
self-generated vortex flows and zonal flows, leading to an anisotropic
structure of fluctuation and transport on the poloidal plane and in the
toroidal direction. Magnetic islands greatly enhance turbulent transport of
both particle and heat. The turbulent transport exhibits variations in the
toroidal direction, with transport through the resonant layer near the island
X-point being enhanced when the X-point is located at the outer mid-plane. A
quantitative agreement is shown between simulations and KSTAR experiments in
terms of time frequency and perpendicular wavevector spectrum.</abstract><doi>10.48550/arxiv.2412.09522</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Physics - Plasma Physics |
| title | Gyrokinetic simulations of the effects of magnetic islands on microturbulence in KSTAR |
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