On the nature of bursting in transport and turbulence in drift wave-zonal flow systems

被引：79

作者：

Malkov, MA ^{[1
]}

Diamond, PH ^{[1
]}

Rosenbluth, MN ^{[1
]}

机构：

[1] Univ Calif San Diego, La Jolla, CA 92093 USA

来源：

PHYSICS OF PLASMAS | 2001年 / 8卷 / 12期

关键词：

D O I：

10.1063/1.1415424

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 predictions of the extended predator-prey model of the coupled spectral dynamics of drift wave-zonal flow turbulence are presented. The model exhibits three possible types of time-dependent solutions, depending on system parameters, which are: (1) quasiperiodic bursting of the transport and turbulence intensity levels; (2) oscillatory relaxation to a stationary state, and in the collisionless limit; (3) an intensity pulse followed by saturation of zonal flow. These solutions are consistent with the time dependent behavior recently observed in the global gyrokinetic simulations. (C) 2001 American Institute of Physics.

引用

收藏

页码：5073 / 5076

页数：4

相关论文

共 23 条

[1] Nondiffusive transport in tokamaks: Three-dimensional structure of bursts and the role of zonal flows [J].

Beyer, P ;

Benkadda, S ;

Garbet, X ;

Diamond, PH .

PHYSICAL REVIEW LETTERS, 2000, 85 (23) :4892-4895

[2] Excitation of zonal flow by drift waves in toroidal plasmas [J].

Chen, L ;

Lin, ZH ;

White, R .

PHYSICS OF PLASMAS, 2000, 7 (08) :3129-3132

[3] Secondary instability in drift wave turbulence as a mechanism for zonal flow and avalanche formation [J].

Diamond, PH ;

Champeaux, S ;

Malkov, M ;

Das, A ;

Gruzinov, I ;

Rosenbluth, MN ;

Holland, C ;

Wecht, B ;

Smolyakov, AI ;

Hinton, FL ;

Lin, Z ;

Hahm, TS .

NUCLEAR FUSION, 2001, 41 (08) :1067-1080

[4]

DIAMOND PH, 1998, PLASMA PHYSICS CONTR

[5] Comparisons and physics basis of tokamak transport models and turbulence simulations [J].

Dimits, AM ;

Bateman, G ;

Beer, MA ;

Cohen, BI ;

Dorland, W ;

Hammett, GW ;

Kim, C ;

Kinsey, JE ;

Kotschenreuther, M ;

Kritz, AH ;

Lao, LL ;

Mandrekas, J ;

Nevins, WM ;

Parker, SE ;

Redd, AJ ;

Shumaker, DE ;

Sydora, R ;

Weiland, J .

PHYSICS OF PLASMAS, 2000, 7 (03) :969-983

[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] Transport control by coherent zonal flows in the core/edge transitional regime [J].

Hallatschek, K ;

Biskamp, D .

PHYSICAL REVIEW LETTERS, 2001, 86 (07) :1223-1226

[8] DEVELOPMENTS IN THE GYROFLUID APPROACH TO TOKAMAK TURBULENCE SIMULATIONS [J].

HAMMETT, GW ;

BEER, MA ;

DORLAND, W ;

COWLEY, SC ;

SMITH, SA .

PLASMA PHYSICS AND CONTROLLED FUSION, 1993, 35 (08) :973-985

[9] Drift waves and transport [J].

Horton, W .

REVIEWS OF MODERN PHYSICS, 1999, 71 (03) :735-778

[10] Effects of collisional zonal flow damping on turbulent transport [J].

Lin, Z ;

Hahm, TS ;

Lee, WW ;

Tang, WM ;

Diamond, PH .

PHYSICAL REVIEW LETTERS, 1999, 83 (18) :3645-3648