ADVANCES IN THE SIMULATION OF TOROIDAL GYRO-LANDAU FLUID MODEL TURBULENCE

被引：195

作者：

WALTZ, RE

KERBEL, GD

MILOVICH, J

HAMMETT, GW

机构：

[1] LAWRENCE LIVERMORE NATL LAB, NERSC, LIVERMORE, CA 94550 USA

[2] PRINCETON PLASMA PHYS LAB, PRINCETON, NJ 08543 USA

来源：

PHYSICS OF PLASMAS | 1995年 / 2卷 / 06期

关键词：

D O I：

10.1063/1.871264

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 gyro-Landau fluid (GLF) model equations for toroidal geometry [R. E. Waltz, R. R. Dominguez, and G. W. Hammett, Phys. Fluids B 4, 3138 (1992)] have been recently applied to study ion temperature gradient (ITG) mode turbulence using the three-dimensional (3-D) nonlinear ballooning mode representation (BMR) outlined earlier [R. E. Waltz, G. D. Kerbel, and J. Milovich, Phys. Plasmas 1, 2229 (1994)]. The present paper extends this work by treating some unresolved issues concerning ITG turbulence with adiabatic electrons. Although eddies are highly elongated in the radial direction, long time radial correlation lengths are short and comparable to poloidal lengths. Although transport at vanishing shear is not particularly large, transport at reverse global shear, is significantly less. Electrostatic transport at moderate shear is not much affected by inclusion of local shear and average favorable curvature. Transport is suppressed when critical E x B rotational shear is comparable to the maximum linear growth rate with only a weak dependence on magnetic shear. Self-consistent turbulent transport of toroidal momentum can result in a transport bifurcation at sufficiently large r/(Rq). However, the main thrust of the new formulation in the paper deals with advances in the development of finite beta GLF models with trapped electrons and BMR numerical methods for treating the fast parallel field motion of the untrapped electrons. © 1995 American Institute of Physics.

引用

页码：2408 / 2416

页数：9

共 19 条

[1]

Waltz R.E., Dominguez R.R., Hammett G.W., Phys. Fluids B., 4, (1992)

[2]

Waltz R.E., Kerbel G.D., Milovich J., Phys. Plasmas, 1, (1994)

[3]

Dorland W., Kotschenreuther M., Beer M.A., Hammett G., Waltz R.B., Dominguez R.R., Valanju P.M., Miner W.H., Dong J.Q., Horton W., Waelbroeck F.L., Tajima T., Le Brun M.J., Proceedings of the 15th International Conference on Plasma Physics and Controlled Nuclear Fusion Research

[4]

Beer M., Hammett G.W., Dorland W., Cowley S., Bull. Am. Phys. Soc., 37, (1992)

[5]

Dorland W., Hammett G.W., Hahn T.S., Beer M.A., Bull. Am. Phys. Soc., 37, (1992)

[6]

Proceedings of the U.S./Japan Workshop on Ion Temperature Gradient Driven Turbulent Transport, (1994)

[7]

Dimits A.M., Byers J.A., Williams T.J., Cohen B.I., Xu X.Q., Cohen R.H., Crotinger J.A., Shestakov A.I.

[8]

Kotschenreuther M., Bull. Am. Phys. Soc., 37, (1991)

[9]

Kotschenreuther M., Rewoldt G., Tang W.M., Comparison of initial value and eigenvalue codes for kinetic toroidal plasma instabilities

[10]

Kadomtsev B.B., Pogutse O.P., Plasma Physics and Controlled Nuclear Fusion Research, 1, (1979)

← 1 2 →