Two-dimensional transport of tokamak plasmas. [Neoclassical transport theory]
A reduced set of two-fluid transport equations is obtained from the conservation equations describing the time evolution of the differential particle number, entropy, and magnetic fluxes in an axisymmetric toroidal plasma with nested magnetic surfaces. Expanding in the small ratio of perpendicular to parallel mobilities and thermal conductivities yields as solubility constraints one-dimensional equations for the surface-averaged thermodynamic variables and magnetic fluxes. Since Ohm's law E + U x B = R' accounts for any nonideal effects, only determines the particle flow relative to the diffusing magnetic surfaces, it is necessary to solve a single two-dimensional generalized differential equation, (delta/delta t) nabla psi x (nabla p - J x B) = O, to find the absolute velocity of a magnetic surface enclosing a fixed toroidal flux. A time-dependent coordinate transformation is used to describe the diffusion of plasma quantities through magnetic surfaces of changing shape.
- Research Organization:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- DOE Contract Number:
- EY-76-C-02-3073
- OSTI ID:
- 6532279
- Report Number(s):
- PPPL-1482; TRN: 79-002549
- Country of Publication:
- United States
- Language:
- English
Similar Records
Hyper-resistivity and electron thermal conductivity due to destroyed magnetic surfaces in axisymmetric plasma equilibria
Behavior of perturbed plasma displacement near regular and singular X-points for compressible ideal magnetohydrodynamic stability analysis
Related Subjects
PLASMA
TRANSPORT THEORY
TOKAMAK DEVICES
PLASMA DRIFT
ENTROPY
MAGNETIC FLUX
MAGNETIC SURFACES
ONE-DIMENSIONAL CALCULATIONS
CLOSED PLASMA DEVICES
MAGNETIC FIELD CONFIGURATIONS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
THERMONUCLEAR DEVICES
700105* - Fusion Energy- Plasma Research- Plasma Kinetics-Theoretical- (-1987)