单磁岛对热输运影响的数值计算

核聚变与等离子体物理 ›› 2012, Vol. 32 ›› Issue (4): 289-294.

• 等离子体物理学 • 下一篇

单磁岛对热输运影响的数值计算

杨锦宏1，储德林1，欧靖2，叶磊2，王平1

(1. 中国人民解放军陆军军官学院物理教研室，合肥 230031；2. 中科院等离子体物理研究所，合肥 230031)

收稿日期:2012-02-04 修回日期:2012-05-07 出版日期:2012-12-15 发布日期:2012-12-14
作者简介:杨锦宏(1977-)，男，安徽省桐城市人，讲师，博士，主要从事等离子体磁流体不稳定性研究。
基金资助:
国家自然基金资助项目(11105224；11105176)

Numerical study of heat transport across single magnetic island

YANG Jin-hong1, CHU De-lin1, OU Jin2, YE Lei2, WANG Ping1

(1. Army Officer Institute of PLA, Hefei 230031;2. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031)

Received:2012-02-04 Revised:2012-05-07 Online:2012-12-15 Published:2012-12-14

摘要/Abstract

摘要：

通过求解二维热输运方程，数值分析了横越单磁岛的热输运现象。仅有背景加热时，当磁岛宽度小于临界磁岛宽度时，磁岛对能量约束影响不明显；当磁岛宽度大于临界磁岛宽度时，磁岛降低的能量损失随着磁岛宽度呈线性增大，有效径向热导系数在磁岛区域呈高斯分布且最大值在有理面处。当等离子体背景加热与ECRH共同加热时，ECRH对磁岛区域的温度分布及能量约束均有别于背景热源，这为进一步研究ECRH抑制撕裂模的问题提供了基础。

关键词: 磁岛, 热输运, 撕裂模

Abstract:

The heat transport across single magnetic island is analyzed numerically by solving two- dimensional energy transport equation. For the background heating, when the magnetic island width is less than the critical magnetic island width, magnetic islands impact on the energy confinement is not obvious, when the magnetic island width is greater than the critical magnetic island width, the energy loss increases linearly with the magnetic island width, and the effective radial thermal conductivity coefficient is in a Gaussian distribution and the maximum value is at the rational surface. For both the background heating and the ECRH heating, temperature distribution and heat energy confinement are different from that of background heating, it provide a basis for further study of the ECRH stabilizing tearing mode.

Key words: Magnetic island, Heat transport, Tearing mode

中图分类号:

TL61+2.2

杨锦宏1，储德林1，欧靖2，叶磊2，王平1. 单磁岛对热输运影响的数值计算[J]. 核聚变与等离子体物理, 2012, 32(4): 289-294.

YANG Jin-hong, CHU De-lin, OU Jing, YE Lei, WANG Ping. Numerical study of heat transport across single magnetic island[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2012, 32(4): 289-294.

参考文献

[1] Furth H P, Killen J, Rosenbluth M N. Finite-resistive instabilities of a sheet pinch[J]. Phys. Fluids, 1963, 6: 459.

[2] Chang Z, Callen J D, Fredrickson E D, et al. Observation of nonlinear neoclassical pressure-gradient-driven tearing modes in TFTR[J]. Phys. Rev. Lett., 1995, 74: 4663.

[3] Zohm H, Gantenbein G, Gude A, et al. Neoclassical tearing modes and their stabilization by electron cyclotron current drive in ASDEX Upgrade[J]. Phys. Plasmas, 2001, 8: 2009.

[4] Günter S, Gude A, Maraschek M, et al. High- confinement regime at high β_nvalues due to a changed behavior of the neoclassical tearing modes[J]. Phys. Rev. Lett., 2001, 87: 275001.

[5] Haye R J La, Lao L L, Strait E J, et al. High beta tokamak operation in DIII-D limited at low density/collisionality by resistive tearing modes[J]. Nucl. Fusion, 1997, 37: 397.

[6] Yu Q, Günter S, Scott B D. Numerical modeling of linear drift-tearing mode stability[J]. Phys. Plasmas, 2003, 10: 797.

[7] Wesson J. Tokamaks[M]. Oxford, 1987.

[8] Chang Z, Callen J D. Global energy confinement degradation due to macroscopic phenomena in tokamaks[J]. Nucl. Fusion, 1990, 30: 219.

[9] Fitzpatrick R. Helical temperature perturbation associated with tearing modes in tokamak plasmas[J]. Phys. Plasmas, 1995, 2: 825.

[10] Gunter S, Yu Q, Lackner K. Modelling of heat transport in magnetised plasmas using non-aligned coordinates[J]. J. Comp. Phys., 2005, 209: 354-370.

[11] Yu Q. Numerical modeling of diffusive heat transport across magnetic islands and local stochastic field[J]. Phys. Plasmas, 2006, 13: 062310.

[12] Luce T C. ECRH physics and technology in ITER[J]. Nucl. Fusion, 2008, 48: 050201.

[13] 洪文玉, 严龙文, 钱俊, 等. HL-2A装置的ECRH实验和偏滤器特性[J]. 核聚变与等离子体物理, 2007, 27(1): 7.

[14] WANG Baonian. ECC Program on EAST and HT-7[R]. Sanya: 16th EC workshop, 2011.

单磁岛对热输运影响的数值计算

Numerical study of heat transport across single magnetic island

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 11

编辑推荐

Metrics

[1]	赵建华, 曹锦佳, 向东, 戴勇智, 杨骏辉, 赵佳蔚, 杨文军. 旋转磁岛对捕获快离子输运影响的研究[J]. 核工业西南物理研究院, 2024, 44(1): 78-84.
[2]	杨振, 吴斌, 陈玉庆 . 分段式电子回旋波驱动电流对早期新经典撕裂模的抑制[J]. 核聚变与等离子体物理, 2023, 43(2): 238-242.
[3]	夏凡，徐媛，凌飞，叶际若，宋绍栋，季小全，马瑞，周建，孙腾飞，严龙文. 撕裂模实时主动控制系统[J]. 核聚变与等离子体物理, 2018, 2(4): 394-401.
[4]	雷晓晨1，李新霞*1，马骏2，龚学余1. 基于有限体积法数值模拟双撕裂模非线性演化[J]. 核聚变与等离子体物理, 2017, 37(3): 257-261.
[5]	王丰，曲洪鹏. 小磁岛转动引起的沿磁力线电流对撕裂模的影响[J]. 核聚变与等离子体物理, 2017, 37(2): 131-136.
[6]	韩最蛟，彭晓东. 等离子体轴向运动对撕裂模不稳定性影响研究[J]. 核聚变与等离子体物理, 2015, 35(4): 289-295.
[7]	何大健，龚学余. 电漂移对高能离子与新经典撕裂模共振相互作用的影响[J]. 核聚变与等离子体物理, 2012, 32(2): 122-127.
[8]	孙腾飞，刘仪，季小全，徐媛，冯北滨. 用磁探针反演磁岛二维结构的方法及其在HL-2A装置上的应用[J]. 核聚变与等离子体物理, 2011, 31(3): 200-206.
[9]	孙腾飞，刘仪，季小全，徐媛，冯北滨. 用磁探针反演磁岛二维结构的方法及其在HL-2A装置上的应用[J]. 核聚变与等离子体物理, 2011, 31(3): 200-206.
[10]	何志雄1, 2，董家齐1, 3，何宏达1，龙永兴1，牟宗泽1，刘峰1，蒋海斌1，高喆2. 反常电子粘滞性引起的线性双撕裂模研究[J]. 核聚变与等离子体物理, 2011, 31(1): 8-14.
[11]	石中兵 ,丁玄同 ,刘泽田 ,郑银甲,杨青巍 ,肖维文,李英量. HL-2A装置利用调制送气的电子热输运研究[J]. 核聚变与等离子体物理, 2006, 26(1): 13-16.