Numerical study of electromagnetic fluid turbulence

Conference · Sat Oct 01 04:00:00 EDT 1983

OSTI ID:5650035

Waltz, R E

Nonlinear two fluid equations for the time evolution of the perturbed electrostatic potential, density, vector potential, and ion parallel motion are written for a collisional plasma in toroidal geometry. The nonlinear terms arise from the E tilde x B/sub 0/ convection and magnetic flutter. Simplified two dimensional mode coupling calculations with a fixed average parallel wave number and curvature drift are performed for a variety of perturbed field combinations. The hot ion effects of cross field viscosity and FLR truncate the spectrum at large wave numbers. Stationary turbulent states of the collisional drift or resistive interchange mode for ..beta.. = 0 and the resistive ballooning mode for 0 < ..beta.. < ..beta../sub crit/ are obtained, and the associated E tilde x B/sub 0/ and magnetic flutter transport coefficients are calculated. The results are summarized by comparison to simple scaling laws (e.g., n tilde/n/sub 0/ approx. 1/k/sub perpendicular/L/sub n/, B tilde/sub perpendicular//B/sub 0/ approx. ..beta.. n tilde/n/sub 0/, D/sub E/ approx. ..gamma../k/sub perpendicular//sup 2/).

• Research Organization: GA Technologies, Inc., San Diego, CA (USA)
• DOE Contract Number: AT03-76ET51011
• OSTI ID: 5650035
• Report Number(s): GA-A-17276; CONF-831105-1; ON: DE84002388
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700105* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Theoretical-- (-1987)
ANALYTICAL SOLUTION
BALLOONING INSTABILITY
COUPLING
FLUTE INSTABILITY
INSTABILITY
NONLINEAR PROBLEMS
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
TURBULENCE