Numerical simulation of electromagnetic turbulence in tokamaks
Journal Article
·
· Phys. Fluids; (United States)
Nonlinear two- and three-fluid equations are written for the time evolution of the perturbed electrostatic potential, densities, vector potential, and parallel ion motion of collisional and trapped electron plasmas in tokamak geometry. The nonlinear terms arise from the E x B/sub 0/ convection (d/dt = partial/partialt+v/sub E/ x del/sub perpendicular/) and magnetic flutter (del-tilde/sub parallel/ = del/sub parallel/+(B/sub perpendicular//B/sub 0/) x del/sub perpendicular/). Simplified two-dimensional (k/sub perpendicular/) mode coupling simulations with a fixed average parallel wavenumber (k/sub parallel/ = 1/Rq) and curvature drift (..omega../sub g/ = (L/sub n//R)..omega../sub asterisk/ ) characteristic of outward ballooning are performed. Homogeneous stationary turbulent states of the dissipative drift and interchange modes from 0< or =..beta..<..beta../sub crit/ for both the collisional and trapped electron plasmas are obtained. Transport coefficients associated with E x B and magnetic motions are calculated. The problem of simulating plasmas with high viscous Reynolds number is treated with an absorbing mantle at the largest wavenumbers.
- Research Organization:
- GA Technologies Inc., San Diego, California 92138
- DOE Contract Number:
- AT03-84ER53158
- OSTI ID:
- 5991339
- Journal Information:
- Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 28:2; ISSN PFLDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700105 -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Theoretical-- (-1987)
700107* -- Fusion Energy-- Plasma Research-- Instabilities
CLOSED PLASMA DEVICES
CONSERVATION LAWS
CONVECTION
COULOMB FIELD
DRIFT INSTABILITY
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
ENERGY TRANSFER
EQUATIONS
HEAT TRANSFER
HEATING
INSTABILITY
ION DRIFT
LOW-BETA PLASMA
MAGNETIZATION
MASS TRANSFER
MATHEMATICS
NUMERICAL ANALYSIS
P
PLASMA
PLASMA DENSITY
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA MICROINSTABILITIES
RADIATIONS
THERMONUCLEAR DEVICES
700105 -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Theoretical-- (-1987)
700107* -- Fusion Energy-- Plasma Research-- Instabilities
CLOSED PLASMA DEVICES
CONSERVATION LAWS
CONVECTION
COULOMB FIELD
DRIFT INSTABILITY
ELECTRIC FIELDS
ELECTROMAGNETIC RADIATION
ENERGY TRANSFER
EQUATIONS
HEAT TRANSFER
HEATING
INSTABILITY
ION DRIFT
LOW-BETA PLASMA
MAGNETIZATION
MASS TRANSFER
MATHEMATICS
NUMERICAL ANALYSIS
P
PLASMA
PLASMA DENSITY
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA MICROINSTABILITIES
RADIATIONS
THERMONUCLEAR DEVICES