The effect of background flow shear on gyrokinetic turbulence in the cold ion limit
The effect of background flow shear on gyrokinetic turbulence in the cold ion limit
复制标题
冷离子极限下背景流剪切对回旋湍流的影响
DOI:
10.1088/1361-6587/ab1320
复制
发表时间:
2019
影响因子:
2.2
通讯作者:
Ball J
中科院分区:
文献类型:
--
作者:
Ball J
The cold ion limit of the local gyrokinetic model is rigorously taken to produce a nonlinear system of fluid equations that includes background flow shear. No fluid closure is required. By considering a simple slab geometry with magnetic drifts, but no magnetic shear, these fluid equations reduce to the Charney–Hasegawa–Mima model in the presence of flow shear. Analytic solutions to this model are found to study the impact of E× B flow shear on the stability of a single parallel velocity gradient driven mode. Additionally, the model is used to investigate the effect of background E× B flow shear on the basic three-mode nonlinear coupling, which reveals differences between zonal and non-zonal modes. These analytic results agree with gyrokinetic simulations and can serve to benchmark the numerical implementation of flow shear and nonlinear coupling.
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影响因子:
8.6
作者:
E. Highcock;E. Highcock;E. Highcock;Michael Barnes;Michael Barnes;A. Schekochihin;A. Schekochihin;F. I. Parra;F. I. Parra;C. Roach;C. Roach;S. Cowley;S. Cowley
通讯作者:
S. Cowley
影响因子:
3.7
作者:
G. Plunk;S. Cowley;A. Schekochihin;T. Tatsuno
通讯作者:
T. Tatsuno
影响因子:
2.2
作者:
McMillan B
通讯作者:
McMillan B
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
A. Schekochihin;E. Highcock;S. Cowley
通讯作者:
S. Cowley
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
R. Jorge;P. Ricci;N. Loureiro
通讯作者:
N. Loureiro