Stationary shear flows in CGL anisotropic toroidal plasmas

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:489545

Pastukhov, V P; Ilgisonis, V I ^[1]

---

1. Kurchatov Institute, Moscow (Russian Federation)

Recently a general structure of stationary shear flows in toroidal plasmas was obtained in the frame of ideal isotropic-pressure MHD model. The structure of the stationary plasma flows was shown to be determined by a hidden symmetry of MHD equations inherent in the toroidal systems with nested magnetic surfaces. However, the characteristic frequencies of the stationary plasma motion can considerably exceed the collisional frequencies in real plasma experiments. In this case the CGL collisionless MHD model seems to be more adequate than the simplified isotropic-pressure MHD model to describe the stationary plasma flows. In this paper we have generalized our approach to analyze the stationary plasma flows in the frame of the collisionless CGL model. We have found again that the hidden symmetry inherent in the toroidal topology results in two integral invariants which depend on two independent surface functions. The structure of stationary flows for CGL model is still the same as for isotropic MHD, however, the pressure tensor components satisfy a appreciably modifies the steady state force-balance equation. These results are applied to analyze the generalized equilibrium in axisymmetric (tokamak-like) magnetic confinement systems.

• OSTI ID: 489545
• Report Number(s): CONF-960354--; CNN: Grant 94-02-03443a; Grant INTAS-94-3802
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLLISIONLESS PLASMA
FLOW MODELS
MAGNETIC SURFACES
MHD EQUILIBRIUM
PLASMA FLUID EQUATIONS
SHEAR
TOKAMAK DEVICES