Sheared Rotation Effects on Kinetic Stability in Enhanced Confinement Tokamak Plasmas, and Nonlinear Dynamics of Fluctuations and Flows in Axisymmetric Plasmas
Sheared Rotation Effects on Kinetic Stability in Enhanced Confinement Tokamak Plasmas, and Nonlinear Dynamics of Fluctuations and Flows in Axisymmetric Plasmas
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剪切旋转对增强约束托卡马克等离子体动力学稳定性的影响，以及轴对称等离子体中涨落和流动的非线性动力学
DOI：
10.2172/3683
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发表时间：
1997
期刊：
影响因子：
3.3
通讯作者：
William Tang
中科院分区：
文献类型：
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作者：
G. Rewoldt;M. Beer;M. S. Chance;T. Hahm;Zhihong Lin;William Tang
剪切旋转动力学被广泛认为对主要托卡马克实验中先进操作模式下实验观察到的约束跃迁具有显著影响，例如托卡马克聚变试验反应堆（TFTR）[D.J.格罗夫和D.M.米德，核聚变25，1167（1985）]，在等离子体内部具有反向磁剪切区域。高n环形漂移模式不稳定的离子温度梯度和被困粒子在环形几何形状的组合效应，可以强烈影响径向剪切环形和极向等离子体旋转。在以前的工作与完整的线性微观不稳定性代码，一个简化的旋转模型，包括只有环向旋转，并获得了结果。在这里，一个更完整的旋转模型，包括从环向和极向旋转和离子压力梯度的总径向电场的贡献，用于适当的自洽处理这个关键问题。介绍了TFTR的相关先进运行模式案例。此外，波动驱动的E x B流的动力学的互补问题进行了研究的集成程序的陀螺动力学模拟环空几何和陀螺流体模拟通量管几何。
Sheared rotation dynamics are widely believed to have signficant influence on experimentally observed confinement transitions in advanced operating modes in major tokamak experiments, such as the Tokamak Fusion Test Reactor (TFTR) [D.J. Grove and D.M. Meade, Nuclear Fusion 25, 1167 (1985)], with reversed magnetic shear regions in the plasma interior. The high-n toroidal drift modes destabilized by the combined effects of ion temperature gradients and trapped particles in toroidal geometry can be strongly affected by radially sheared toroidal and poloidal plasma rotation. In previous work with the FULL linear microinstability code, a simplified rotation model including only toroidal rotation was employed, and results were obtained. Here, a more complete rotation model, that includes contributions from toroidal and poloidal rotation and the ion pressure gradient to the total radial electric field, is used for a proper self-consistent treatment of this key problem. Relevant advanced operating mode cases for TFTR are presented. In addition, the complementary problem of the dynamics of fluctuation-driven E x B flow is investigated by an integrated program of gyrokinetic simulation in annulus geometry and gyrofluid simulation in flux tube geometry.
DOI：
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发表时间：
2007
期刊：
影响因子：
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作者：
K. Itoh;et. al.
通讯作者：
et. al.
静电学会杂志。9-3。
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