Hybrid fluid/kinetic model for parallel heat conduction

Conference · Wed Dec 30 23:00:00 EST 1998

OSTI ID:334074

Callen, J D; Hegna, C C; Held, E D ^[1]

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1. Univ. of Wisconsin, Madison, WI (United States)

It is argued that in order to use fluid-like equations to model low frequency ({omega} < {nu}) phenomena such as neoclassical tearing modes in low collisionality ({nu} < {omega}{sub b}) tokamak plasmas, a Chapman-Enskog-like approach is most appropriate for developing an equation for the kinetic distortion (F) of the distribution function whose velocity-space moments lead to the needed fluid moment closure relations. Further, parallel heat conduction in a long collision mean free path regime can be described through a combination of a reduced phase space Chapman-Enskog-like approach for the kinetics and a multiple-time-scale analysis for the fluid and kinetic equations.

• Research Organization: Univ. of Wisconsin, Center for Plasma Theory and Computation, Madison, WI (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-86ER53218
• OSTI ID: 334074
• Report Number(s): CONF-9803121--PROC.; ON: DE99001004
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
99 GENERAL AND MISCELLANEOUS
HEAT TRANSFER
MATHEMATICAL MODELS
NEOCLASSICAL TRANSPORT THEORY
NONLINEAR PROBLEMS
PLASMA FLUID EQUATIONS
PLASMA SIMULATION
TEARING INSTABILITY
TOKAMAK DEVICES