Intrinsic rotation with gyrokinetic modelsa)

Intrinsic rotation with gyrokinetic modelsa)
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回旋运动模型的固有旋转a)

DOI:
10.1063/1.3699186
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发表时间:
2012
期刊:
影响因子:
2.2
通讯作者:
P. Catto
P. Catto
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
F. Parra;M. Barnes;I. Calvo;P. Catto

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研究了托卡马克中湍流和新古典主义效应产生的内禀转动。为了获得在实验中观察到的复杂依赖关系,有必要建立一个在没有预先存在的速度的情况下重新分配托卡马克内动量的径向动量通量模型。当使用最低阶陀螺动力学公式时,模型的对称性排除了这种可能性,使得陀螺半径中的小效应在尺度长度扩展时是必要的。这些通常很小的影响对于动量输运来说变得很重要,因为最低阶陀螺动力学公式的对称性导致了最低阶动量通量的抵消。讨论了为了保留所有物理相关效应而需要获得的陀螺动力学方程的精度。
The generation of intrinsic rotation by turbulence and neoclassical effects in tokamaks is considered. To obtain the complex dependences observed in experiments, it is necessary to have a model of the radial flux of momentum that redistributes the momentum within the tokamak in the absence of a preexisting velocity. When the lowest order gyrokinetic formulation is used, a symmetry of the model precludes this possibility, making small effects in the gyroradius over scale length expansion necessary. These effects that are usually small become important for momentum transport because the symmetry of the lowest order gyrokinetic formulation leads to the cancellation of the lowest order momentum flux. The accuracy to which the gyrokinetic equation needs to be obtained to retain all the physically relevant effects is discussed.
DOI: 10.1063/1.3124133
发表时间: 2009-06
期刊: Physics of Plasmas
影响因子: 2.2
作者:
A. Peeters;C. Angioni;Y. Camenen;F. Casson;W. Hornsby;A. Snodin;D. Strintzi
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影响因子: 8.6
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作者:
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