Physics of zonal flows in drift wave turbulence

被引:0
作者
Scott, B [1 ]
机构
[1] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany
来源
THEORY OF FUSION PLASMAS | 2000年
关键词
D O I
暂无
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 interaction between sheared ExB flows and drift wave turbulence is investigated numerically with both two- and three-dimensional models. TWO dimensional turbulence always suppresses itself by generating strong flow shear layers. The three dimensional cases do not exhibit this scenario. The implication is that ExB flow shear generation by turbulence is weak or nonexistent for tokamak edge plasmas, so that confinement regime transitions would have to come from self consistent properties of the neoclassical equilibrium.
引用
收藏
页码:413 / 418
页数:6
相关论文
共 18 条
[1]  
BIGLARI H, 1991, PHYS FLUIDS B-PLASMA, V3, P1
[2]   RESISTIVE DRIFT-WAVE TURBULENCE [J].
CAMARGO, SJ ;
BISKAMP, D ;
SCOTT, BD .
PHYSICS OF PLASMAS, 1995, 2 (01) :48-62
[3]   MULTIDIMENSIONAL UPWIND METHODS FOR HYPERBOLIC CONSERVATION-LAWS [J].
COLELLA, P .
JOURNAL OF COMPUTATIONAL PHYSICS, 1990, 87 (01) :171-200
[4]   THEORY OF MEAN POLOIDAL FLOW GENERATION BY TURBULENCE [J].
DIAMOND, PH ;
KIM, YB .
PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1991, 3 (07) :1626-1633
[5]   THE PHENOMENOLOGY OF THE L-H TRANSITION IN THE DIII-D TOKAMAK [J].
GOHIL, P ;
BURRELL, KH ;
DOYLE, EJ ;
GROEBNER, RJ ;
KIM, J ;
SERAYDARIAN, RP .
NUCLEAR FUSION, 1994, 34 (08) :1057-1068
[6]   Shearing rate of time-dependent E x B flow [J].
Hahm, TS ;
Beer, MA ;
Lin, Z ;
Hammett, GW ;
Lee, WW ;
Tang, WM .
PHYSICS OF PLASMAS, 1999, 6 (03) :922-926
[7]   INERTIAL RANGES IN 2-DIMENSIONAL TURBULENCE [J].
KRAICHNAN, RH .
PHYSICS OF FLUIDS, 1967, 10 (07) :1417-+
[8]   Turbulent transport reduction by zonal flows: Massively parallel simulations [J].
Lin, Z ;
Hahm, TS ;
Lee, WW ;
Tang, WM ;
White, RB .
SCIENCE, 1998, 281 (5384) :1835-1837
[9]   ExB shear flows and electromagnetic gyrofluid turbulence [J].
Scott, B .
PHYSICS OF PLASMAS, 2000, 7 (05) :1845-1856
[10]   Global consistency for thin flux tube treatments of toroidal geometry [J].
Scott, B .
PHYSICS OF PLASMAS, 1998, 5 (06) :2334-2339