High and very high modes from energy, particle, and momentum transport models
High and very high modes from energy, particle, and momentum transport models
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能量、粒子和动量输运模型的高模和极高模
DOI：
10.1063/1.870750
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发表时间：
1994
影响因子：
2.2
通讯作者：
T. Osborne
中科院分区：
文献类型：
--
作者：
G. Staebler;F. Hinton;J. Wiley;R. Dominguez;C. Greenfield;P. Gohil;T. Kurki;T. Osborne
提出了能量、粒子和动量输运的时间相关模拟，显示了类似于高模式（H 模式）的改进限制。输运模型结合了剪切流对湍流的抑制，这是自洽计算的。讨论了温度、密度和速度剖面随时间演化对湍流模型的约束。发现类似于极高限制模式（VH 模式）的状态由于传输势垒宽度的增加而导致更高的加热功率。由于环形旋转剪切，中性束注入大大降低了 VH 模式所需的功率。考虑了边缘动量源（例如离子轨道损失）的可能作用，并对偏置探针诱导和加热诱导的 H 模式进行了比较。
Time‐dependent simulations of energy, particle, and momentum transport are presented, which show improved confinement similar to the high mode (H mode). The transport model incorporates the suppression of turbulence by sheared flows, which are self‐consistently calculated. Constraints on the turbulence model from the time evolution of the temperature, density, and velocity profiles are discussed. A regime similar to the very high confinement mode (VH mode) is found to result at higher heating power due to an increase in the width of the transport barrier. Coneutral beam injection lowers the power required for VH mode substantially due to the toroidal rotation shear. The possible role of edge momentum sources such as ion orbit loss is considered, and a comparison between biased probe‐induced and heating‐induced H modes is made.
影响因子：
3.3
作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox
通讯作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox