| 双撕裂模非线性演化过程中有理面上的剪切流 |
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| 引用本文： | 李新霞,路兴强,龚学余.双撕裂模非线性演化过程中有理面上的剪切流[J].计算物理,2011,28(6):831-834. |
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| 作者姓名： | 李新霞 路兴强 龚学余 |
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| 作者单位： | 南华大学 核科学技术学院, 湖南 衡阳 421001 |
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| 基金项目： | 国家自然科学基金(10775066,11075073); 国家973ITER专项(2009GB105002)资助项目 |
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| 摘 要： | 在二维平板几何模型下,利用磁流体力学方程组数值模拟托卡马克装置中双撕裂模非线性演化过程中有理面上剪切流的时间和空间分布.结果表明,双撕裂模非线性演化的早期阶段,有理面上没有形成明显的剪切流.剪切流主要存在于快速磁重联阶段,随着磁重联的结束而逐渐消失,剪切流的强度和空间分布随磁岛的演化而改变.另外,较大的等离子体电阻加速磁重联,但是对剪切流的强度和变化趋势没有直接的影响.
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| 关 键 词： | 双撕裂模 磁重联 剪切流 数值模拟 |
| 收稿时间： | 2010-12-13 |
| 修稿时间： | 2011-04-01 |
Shear Flows in Resonant Surfaces During Nonlinear Evolution of Double Tearing Modes |
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| LI Xinxia,LU Xingqiang,GONG Xueyu.Shear Flows in Resonant Surfaces During Nonlinear Evolution of Double Tearing Modes[J].Chinese Journal of Computational Physics,2011,28(6):831-834. |
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| Authors: | LI Xinxia LU Xingqiang GONG Xueyu |
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| Affiliation: | School of Nuclear Science and Technology, University of South China, Hengyang 421001, China |
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| Abstract: | Shear flows in resonant surfaces of Tokamka devices induced by nonlinear evolution of double tearing modes(DTM) are studied numerically in the framework of resistive magnetohydronamic model with slab geometry.It is found that in early phases of nonlinear evolution of DTM,no remarkable shear flows is generated in resonant surfaces.Effective shear flows emerge during the phase of fast magnetic reconnection and disappear finally.Both amplitude and distribution of shear flows are found vary with nonlinear evolu... |
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| Keywords: | double tearing modes magnetic reconnection shear flow numerical simulation |
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