The role of magnetic shear for zonal flow generation

被引：9
|
作者：
Anderson, J. [1 ]
Nordman, H.
机构：
[1] Kyoto Univ, Grad Sch Energy Sci, Dept Fundamental Energy Sci, Kyoto 6110011, Japan
[2] Chalmers, EURATOM VR Assoc Chalmers, Dept Radio & Space Sci, S-41296 Gothenburg, Sweden
来源：
JOURNAL OF PLASMA PHYSICS | 2006年 / 72卷
关键词：
D O I：
10.1017/S002237780600479X
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The role of magnetic shear for zonal flow generation by ion temperature gradient and trapped electron (TE) mode turbulence is studied analytically using fluid descriptions. The sealing of the zonal flow (ZF) growth rate with magnetic shear is examined and compared with linear growth rates for typical tokamak parameter values. The results indicate that large levels of ZF are obtained in regions of negative magnetic shear, especially for ZF driven by TE mode turbulence. The strong magnetic shear scaling obtained for TE-mode-driven ZFs originates from the bounce average of the electron magnetic drifts.
引用
收藏
页码：609 / 615
页数：7
相关论文
共 50 条
  • [1] Zonal flow generation in parallel flow shear driven turbulence
    Kosuga, Y.
    Itoh, S. -I.
    Itoh, K.
    PHYSICS OF PLASMAS, 2017, 24 (03)
  • [2] Magnetic shear effect on zonal flow generation in ion-temperature-gradient mode turbulence
    Lu He-Lin
    Chen Zhong-Yong
    Li Yue-Xun
    Yang Kai
    ACTA PHYSICA SINICA, 2011, 60 (08)
  • [3] On the nonlinear turbulent dynamics of shear-flow decorrelation and zonal flow generation
    Tynan, GR
    Moyer, RA
    Burin, MJ
    Holland, C
    PHYSICS OF PLASMAS, 2001, 8 (06) : 2691 - 2699
  • [4] Role of magnetic shear in flow shear suppression
    Kim, Eun-jin
    PHYSICS OF PLASMAS, 2007, 14 (08)
  • [5] Numerical model for Zonal Flow Generation by Magnetized Rossby Waves in the Ionosphere with the Background Shear Flow
    Kharshiladze, O. A.
    Chargazia, Kh.
    GEOMAGNETISM AND AERONOMY, 2017, 57 (02) : 207 - 216
  • [6] Numerical model for zonal flow generation by magnetized Rossby waves in the ionosphere with the background shear flow
    O. A. Kharshiladze
    Kh. Chargazia
    Geomagnetism and Aeronomy, 2017, 57 : 207 - 216
  • [7] Nonlinear Stability of a Zonal Shear Flow
    Churilov, S. M.
    Shukhman, I. G.
    GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS, 1986, 36 (01): : 31 - 52
  • [8] Generation of zonal flow and magnetic field in the ionospheric E-layer
    Kahlon, L. Z.
    Kaladze, T. D.
    JOURNAL OF PLASMA PHYSICS, 2015, 81
  • [9] Influence of the mean flow on zonal flow generation
    Lashkin, Volodymyr M.
    PHYSICS OF PLASMAS, 2008, 15 (12)
  • [10] Generation of zonal flow by electromagnetic fluctuations
    Mahajan, S
    Weiland, J
    PLASMA PHYSICS AND CONTROLLED FUSION, 2000, 42 (09) : 987 - 997
12345