Simulation of Toroidal Rotation Effect on Heat Flux Transport in the Edge Plasma of Small Size Divertor Tokamak |
| |
Authors: | A H Bekheit |
| |
Affiliation: | 1.Plasma and Nuclear Fusion Department,Nuclear Research Centre, Atomic Energy Authority,Cairo,Egypt |
| |
Abstract: | The effect of toroidal rotation on heat flux transport in the edge plasma of small size divertor was simulated by B2SOLP0.5.2D transport code. The main results of simulation shows that, the following: (1) the radial heat flux is strongly influenced by toroidal rotation.
(2) The amplification of conduction part of radial heat flux imposes nonresilient profile of ion temperature, under which
the effect of toroidal rotation on ion temperature profile is strong. (3) The ion distribution and its gradients are lower
for counter-injection neutral beam than for co-injection neutral beam. (4) Reversal of toroidal rotation during using neutral
beam injection result in reverses of radial electric field and E × B drift velocity. (5) The toroidal rotation strong influence on the ion temperature scale length of the ion temperature gradient
(ITG). (6) Switch on and off all drifts leads to higher change in the ion density distribution in edge plasma of small size
divertor tokamak when the unbalance neutral beam injection are considered (7) the comparison between radial heat flux at different
momentum input shows that, the radial ion heat flux with larger ion temperature scale length in the case of co-injection neutral
beam is larger than the ion heat flux with smaller ion temperature scale length in the case of counter-injection neutral beam. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|