Comparison of Velocity Shear with Turbulence Reduction Driven by Biasing in a Simple Cylindrical Slab Plasm

被引：15
|
作者：
Gentle, K. W. [1 ]
Liao, K. [1 ]
Lee, K. [1 ]
Rowan, W. L. [1 ]
机构：
[1] Univ Texas Austin, Inst Fus Studies, Austin, TX 78712 USA
来源：
PLASMA SCIENCE & TECHNOLOGY | 2010年 / 12卷 / 04期
关键词：
turbulence suppression; shear stabilization; velocity shear; bias; TRANSPORT; ROTATION;
D O I：
10.1088/1009-0630/12/4/02
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：
In an experimental realization of the sheared cylindrical slab, the level of plasma turbulence is strongly reduced by application of a sufficient bias potential difference in the radial direction. Density fluctuation levels Delta n(rms)/n decrease by more than a factor of five. The ion flow velocity profile is measured spectroscopically from the Doppler shift of an argon ion line. Comparison of the shearing rates with the turbulent amplitudes as a function of bias show no relation between the shearing rate and turbulence reduction, contrary to expectation
引用
收藏
页码：391 / 396
页数：6
相关论文
共 13 条
  • [1] Comparison of Velocity Shear with Turbulence Reduction Driven by Biasing in a Simple Cylindrical Slab Plasma
    K.W.GENTLE
    K.LIAO
    K.LEE
    W.L.ROWAN
    [J]. Plasma Science and Technology, 2010, (04) : 391 - 396
  • [2] Comparison of Velocity Shear with Turbulence Reduction Driven by Biasing in a Simple Cylindrical Slab Plasma
    K.W.GENTLE
    K.LIAO
    K.LEE
    W.L.ROWAN
    [J]. Plasma Science and Technology, 2010, 12 (04) : 391 - 396
  • [3] OBSERVATIONS OF VELOCITY SHEAR DRIVEN PLASMA TURBULENCE
    KINTNER, PM
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1976, 81 (28): : 5114 - 5122
  • [4] RESISTIVE DRIFT WAVE AND INTERCHANGE TURBULENCE IN A CYLINDRICAL PLASMA WITH MAGNETIC AND VELOCITY SHEAR
    WAKATANI, M
    WATANABE, K
    SUGAMA, H
    HASEGAWA, A
    [J]. PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1992, 4 (07): : 1754 - 1765
  • [5] Impurity transport driven by parallel velocity shear turbulence in hydrogen isotope plasmas
    Guo, Weixin
    Wang, Lu
    Zhuang, Ge
    [J]. NUCLEAR FUSION, 2019, 59 (07)
  • [6] Comparison between kinetic and fluid simulations of slab ion temperature gradient driven turbulence
    Sugama, H
    Watanabe, TH
    Horton, W
    [J]. PHYSICS OF PLASMAS, 2003, 10 (03) : 726 - 736
  • [7] Effect of the externally driven velocity shear on the turbulence radial wavenumber spectral shift and its amplitude
    Xiao, G. L.
    Zou, X. L.
    Zhong, W. L.
    Song, S. D.
    Liang, A. S.
    Liu, A. D.
    Xu, M.
    Duan, X. R.
    [J]. PHYSICS OF PLASMAS, 2019, 26 (07)
  • [8] Computations of shear driven vortex flow in a cylindrical cavity using a modified k-ε turbulence model
    Saqr, Khalid M.
    Aly, Hossam S.
    Kassem, Hassan I.
    Sies, Mohsin M.
    Wahid, Mazlan A.
    [J]. INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2010, 37 (08) : 1072 - 1077
  • [9] Turbulent transport reduction by E x B velocity shear during edge plasma biasing:: recent experimental results
    Van Oost, G
    Adámek, J
    Antoni, V
    Balan, P
    Boedo, JA
    Devynck, P
    Duran, I
    Eliseev, L
    Gunn, JP
    Hron, M
    Ionita, C
    Jachmich, S
    Kirnev, GS
    Martines, E
    Melnikov, A
    Schrittwieser, R
    Silva, C
    Stöckel, J
    Tendler, M
    Varandas, C
    Van Schoor, M
    Vershkov, V
    Weynants, RR
    [J]. PLASMA PHYSICS AND CONTROLLED FUSION, 2003, 45 (05) : 621 - 643
  • [10] Fluctuating loads on a tidal turbine due to velocity shear and turbulence: Comparison of CFD with field data
    Ahmed, U.
    Apsley, D. D.
    Afgan, I.
    Stallard, T.
    Stansby, P. K.
    [J]. RENEWABLE ENERGY, 2017, 112 : 235 - 246
12