The impact of static magnetic perturbations on edge localized modes
The physics of edge localized modes (ELMs) mitigated by static magnetic perturbations (SMPs) with a toroidal mode number n=0 is studied. Three-field reduced magnetohydrodynamics (MHD) equations are solved by BOUT++ code. In the simulation, an effective mitigation of ELM has been observed when SMPs a...
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| Veröffentlicht in: | Physics letters. A 2016-07, Vol.380 (33), p.2544-2548 |
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| container_end_page | 2548 |
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| container_issue | 33 |
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| container_title | Physics letters. A |
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| creator | Mou, M.L. Huang, J. Wu, N. Chen, S.Y. Tang, C.J. |
| description | The physics of edge localized modes (ELMs) mitigated by static magnetic perturbations (SMPs) with a toroidal mode number n=0 is studied. Three-field reduced magnetohydrodynamics (MHD) equations are solved by BOUT++ code. In the simulation, an effective mitigation of ELM has been observed when SMPs are added. A new mechanism of ELM mitigation is proposed that n=0 SMPs can excite a wide toroidal mode spectrum through E×B shearing rate which diminishes turbulent transport in the nonlinear phase. The mechanism is confirmed by the simulation results and relevant physical analysis in this paper.
•The process that ELM can be mitigated by static magnetic perturbations is modeled.•A new mechanism of ELM mitigation by static magnetic perturbations is proposed.•Static magnetic perturbation could excite a strong E×B shear at the boundary of the plasma.•A wide toroidal mode spectrum diminishes turbulent transport in the ELM crash phase. |
| doi_str_mv | 10.1016/j.physleta.2016.05.047 |
| format | Article |
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•The process that ELM can be mitigated by static magnetic perturbations is modeled.•A new mechanism of ELM mitigation by static magnetic perturbations is proposed.•Static magnetic perturbation could excite a strong E×B shear at the boundary of the plasma.•A wide toroidal mode spectrum diminishes turbulent transport in the ELM crash phase.</description><identifier>ISSN: 0375-9601</identifier><identifier>EISSN: 1873-2429</identifier><identifier>DOI: 10.1016/j.physleta.2016.05.047</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Edge localized modes ; Excitation spectra ; Fluid dynamics ; Magnetohydrodynamics ; Mathematical analysis ; Mitigation mechanism ; Perturbation methods ; Simulation ; Solid state physics ; Static magnetic perturbations ; Turbulence</subject><ispartof>Physics letters. A, 2016-07, Vol.380 (33), p.2544-2548</ispartof><rights>2016 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c345t-b6c1ebbf1c20aa3f873bd9cce28a8ed4db16e32096b1bed5c33aa1d9ac756d743</citedby><cites>FETCH-LOGICAL-c345t-b6c1ebbf1c20aa3f873bd9cce28a8ed4db16e32096b1bed5c33aa1d9ac756d743</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.physleta.2016.05.047$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Mou, M.L.</creatorcontrib><creatorcontrib>Huang, J.</creatorcontrib><creatorcontrib>Wu, N.</creatorcontrib><creatorcontrib>Chen, S.Y.</creatorcontrib><creatorcontrib>Tang, C.J.</creatorcontrib><title>The impact of static magnetic perturbations on edge localized modes</title><title>Physics letters. A</title><description>The physics of edge localized modes (ELMs) mitigated by static magnetic perturbations (SMPs) with a toroidal mode number n=0 is studied. Three-field reduced magnetohydrodynamics (MHD) equations are solved by BOUT++ code. In the simulation, an effective mitigation of ELM has been observed when SMPs are added. A new mechanism of ELM mitigation is proposed that n=0 SMPs can excite a wide toroidal mode spectrum through E×B shearing rate which diminishes turbulent transport in the nonlinear phase. The mechanism is confirmed by the simulation results and relevant physical analysis in this paper.
•The process that ELM can be mitigated by static magnetic perturbations is modeled.•A new mechanism of ELM mitigation by static magnetic perturbations is proposed.•Static magnetic perturbation could excite a strong E×B shear at the boundary of the plasma.•A wide toroidal mode spectrum diminishes turbulent transport in the ELM crash phase.</description><subject>Edge localized modes</subject><subject>Excitation spectra</subject><subject>Fluid dynamics</subject><subject>Magnetohydrodynamics</subject><subject>Mathematical analysis</subject><subject>Mitigation mechanism</subject><subject>Perturbation methods</subject><subject>Simulation</subject><subject>Solid state physics</subject><subject>Static magnetic perturbations</subject><subject>Turbulence</subject><issn>0375-9601</issn><issn>1873-2429</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqFkElPwzAQhS0EEqXwF5CPXBLsOM5yA1VsUiUu5Wx5mbSukjjYDlL59bgqnDnNoveeZj6EbinJKaHV_T6fdofQQ5R5keac8JyU9Rla0KZmWVEW7TlaEFbzrK0IvURXIewJSUrSLtBqswNsh0nqiF2HQ5TRajzI7QjHZgIfZ6_S0o0BuxGD2QLunZa9_QaDB2cgXKOLTvYBbn7rEn08P21Wr9n6_eVt9bjONCt5zFSlKSjVUV0QKVmXrlOm1RqKRjZgSqNoBawgbaWoAsM1Y1JS00pd88rUJVuiu1Pu5N3nDCGKwQYNfS9HcHMQtCk4L1kKSNLqJNXeheChE5O3g_QHQYk4UhN78UdNHKkJwkWilowPJyOkR74seBG0hVGDsR50FMbZ_yJ-ADwNeyE</recordid><startdate>20160729</startdate><enddate>20160729</enddate><creator>Mou, M.L.</creator><creator>Huang, J.</creator><creator>Wu, N.</creator><creator>Chen, S.Y.</creator><creator>Tang, C.J.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20160729</creationdate><title>The impact of static magnetic perturbations on edge localized modes</title><author>Mou, M.L. ; Huang, J. ; Wu, N. ; Chen, S.Y. ; Tang, C.J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c345t-b6c1ebbf1c20aa3f873bd9cce28a8ed4db16e32096b1bed5c33aa1d9ac756d743</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Edge localized modes</topic><topic>Excitation spectra</topic><topic>Fluid dynamics</topic><topic>Magnetohydrodynamics</topic><topic>Mathematical analysis</topic><topic>Mitigation mechanism</topic><topic>Perturbation methods</topic><topic>Simulation</topic><topic>Solid state physics</topic><topic>Static magnetic perturbations</topic><topic>Turbulence</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mou, M.L.</creatorcontrib><creatorcontrib>Huang, J.</creatorcontrib><creatorcontrib>Wu, N.</creatorcontrib><creatorcontrib>Chen, S.Y.</creatorcontrib><creatorcontrib>Tang, C.J.</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Physics letters. A</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mou, M.L.</au><au>Huang, J.</au><au>Wu, N.</au><au>Chen, S.Y.</au><au>Tang, C.J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The impact of static magnetic perturbations on edge localized modes</atitle><jtitle>Physics letters. A</jtitle><date>2016-07-29</date><risdate>2016</risdate><volume>380</volume><issue>33</issue><spage>2544</spage><epage>2548</epage><pages>2544-2548</pages><issn>0375-9601</issn><eissn>1873-2429</eissn><abstract>The physics of edge localized modes (ELMs) mitigated by static magnetic perturbations (SMPs) with a toroidal mode number n=0 is studied. Three-field reduced magnetohydrodynamics (MHD) equations are solved by BOUT++ code. In the simulation, an effective mitigation of ELM has been observed when SMPs are added. A new mechanism of ELM mitigation is proposed that n=0 SMPs can excite a wide toroidal mode spectrum through E×B shearing rate which diminishes turbulent transport in the nonlinear phase. The mechanism is confirmed by the simulation results and relevant physical analysis in this paper.
•The process that ELM can be mitigated by static magnetic perturbations is modeled.•A new mechanism of ELM mitigation by static magnetic perturbations is proposed.•Static magnetic perturbation could excite a strong E×B shear at the boundary of the plasma.•A wide toroidal mode spectrum diminishes turbulent transport in the ELM crash phase.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.physleta.2016.05.047</doi><tpages>5</tpages></addata></record> |
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| subjects | Edge localized modes Excitation spectra Fluid dynamics Magnetohydrodynamics Mathematical analysis Mitigation mechanism Perturbation methods Simulation Solid state physics Static magnetic perturbations Turbulence |
| title | The impact of static magnetic perturbations on edge localized modes |
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