Anomalous Convection Reversal due to Turbulence Transition in Tokamak Plasmas
A critical physical model, based on the ion temperature gradient （ITG） mode and the trapped electron mode （TEM）, trying to explain the spatio-temporal dynamics of anomalous particle convection reversal （i.e., the particle convective flux reverses from inward to outward）, is developed numerically. Th...
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| Published in | Chinese physics letters Vol. 32; no. 3; pp. 70 - 73 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.03.2015
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0256-307X 1741-3540 |
| DOI | 10.1088/0256-307X/32/3/035201 |
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| Abstract | A critical physical model, based on the ion temperature gradient （ITG） mode and the trapped electron mode （TEM）, trying to explain the spatio-temporal dynamics of anomalous particle convection reversal （i.e., the particle convective flux reverses from inward to outward）, is developed numerically. The dependence of density peaking and profile shape on the particle convection is studied. Only the inward pinch could lead to the increase of the density peaking. The validation of the critical model is also analyzed. A comparison of the estimates calculated by the model and the experimental results from the Tore Supra tokamak shows that they are qualitatively both consistent. |
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| AbstractList | A critical physical model, based on the ion temperature gradient (ITG) mode and the trapped electron mode (TEM), trying to explain the spatio-temporal dynamics of anomalous particle convection reversal (i.e., the particle convective flux reverses from inward to outward), is developed numerically. The dependence of density peaking and profile shape on the particle convection is studied. Only the inward pinch could lead to the increase of the density peaking. The validation of the critical model is also analyzed. A comparison of the estimates calculated by the model and the experimental results from the Tore Supra tokamak shows that they are qualitatively both consistent. A critical physical model, based on the ion temperature gradient （ITG） mode and the trapped electron mode （TEM）, trying to explain the spatio-temporal dynamics of anomalous particle convection reversal （i.e., the particle convective flux reverses from inward to outward）, is developed numerically. The dependence of density peaking and profile shape on the particle convection is studied. Only the inward pinch could lead to the increase of the density peaking. The validation of the critical model is also analyzed. A comparison of the estimates calculated by the model and the experimental results from the Tore Supra tokamak shows that they are qualitatively both consistent. |
| Author | 孙恬恬 陈少永 王占辉 彭晓东 黄捷 牟茂淋 唐昌建 |
| AuthorAffiliation | College of Physical Science and Technology, Sichuan University, Chengdu 610064 Southwestern Institute of Physics, Chengdu 610041 |
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| Cites_doi | 10.1063/1.873016 10.1103/PhysRevLett.91.035001 10.1063/1.866014 10.1103/PhysRevLett.111.265001 10.1103/PhysRevLett.41.551 10.1063/1.4753931 10.1088/0029-5515/45/6/008 10.1088/0029-5515/42/1/308 10.1063/1.1589009 |
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| Notes | 11-1959/O4 A critical physical model, based on the ion temperature gradient （ITG） mode and the trapped electron mode （TEM）, trying to explain the spatio-temporal dynamics of anomalous particle convection reversal （i.e., the particle convective flux reverses from inward to outward）, is developed numerically. The dependence of density peaking and profile shape on the particle convection is studied. Only the inward pinch could lead to the increase of the density peaking. The validation of the critical model is also analyzed. A comparison of the estimates calculated by the model and the experimental results from the Tore Supra tokamak shows that they are qualitatively both consistent. SUN Tian-Tian, CHEN Shao-Yong, WANG Zhan-Hui, PENG Xiao-Dong, HUANG Jie, MOU Mao-Lin, TANG Chang-Jian（1.College of Physical Science and Technology, Sichuan University, Chengdu 610064; 2.Southwestern Institute of Physics, Chengdu 610041） ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
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| References | 11 Xu X Q (12) 2008; 4 1 2 Mahdavi M A (5) 2002; 42 Yan'kov V V (3) 1994; 60 4 Wang Z H (9) 2011; 51 6 7 8 Kalupin D (10) 2005; 45 |
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| Snippet | A critical physical model, based on the ion temperature gradient （ITG） mode and the trapped electron mode （TEM）, trying to explain the spatio-temporal dynamics... A critical physical model, based on the ion temperature gradient (ITG) mode and the trapped electron mode (TEM), trying to explain the spatio-temporal dynamics... |
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| StartPage | 70 |
| SubjectTerms | Computational fluid dynamics Convection Convection modes Density Mathematical models Plasmas Tokamak devices Turbulence 反常 对流 托卡马克等离子体 时空动力学 物理模型 离子温度梯度 致密度 逆转 |
| Title | Anomalous Convection Reversal due to Turbulence Transition in Tokamak Plasmas |
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