Momentum and thermal transport in neutral-beam-heated tokamaks

Journal Article · Sun May 01 04:00:00 EDT 1988 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.866747· OSTI ID:5263852

Mattor, N; Diamond, P H

The relation between momentum and thermal transport in neutral-beam-heated tokamaks with subsonic toroidal rotation velocity has been investigated. A theory of diffusive momentum transport driven by ion-temperature-gradient-driven turbulence (eta/sub i/ turbulence) is presented. In addition, the level of eta/sub i/ turbulence is enhanced by radially sheared toroidal rotation. The resulting ion shear viscosity is chi/sub phi/ = 1.3)(1+eta/sub i/)/tau+((L/sub n//2c/sub s/) (dV/sub 0//dr))/sup 2/)/sup 2/(rho/sup 2//sub s/c/sub s// L/sub s/). The associated ion thermal diffusivity, chi/sub i/, is identical to chi/sub phi/. Thus a scenario based on velocity-shear-enhanced eta/sub i/ turbulence is consistent with the experimentally observed relationship between thermal and momentum confinement.

• Research Organization: Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas 78712
• OSTI ID: 5263852
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 31:5; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
ANNULAR SPACE
BEAM INJECTION
CLOSED PLASMA DEVICES
CONFIGURATION
DIFFUSION
ENERGY TRANSFER
FLUID FLOW
HEAT TRANSFER
ION TEMPERATURE
MOMENTUM TRANSFER
NEUTRAL ATOM BEAM INJECTION
PLASMA
SHEAR
SPACE
SUBSONIC FLOW
TEMPERATURE GRADIENTS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TOROIDAL CONFIGURATION
TURBULENCE
VELOCITY
VISCOSITY