Global simulation of electromagnetic microturbulence based on reduced Landau fluid model
Abstract
It is believed that ion temperature gradient (ITG) driven mode and the zonal flow generated from the mode are responsible for ion transport in tokamak plasmas. Linear calculations show that in a finite beta tokamak plasma the toroidal ITG mode is stabilized by increasing plasma beta, while the kinetic ballooning mode (KBM) becomes unstable. Finite beta may also affect the generation of zonal flow. We have developed a global Landau-fluid code for an electromagnetic turbulence in a tokamak plasma and done nonlinear simulation of electromagnetic toroidal ITG and KBM turbulence. Interaction among toroidal ITG mode, KBM and the zonal flow generated from them will be discussed.
- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- October 2003
- Bibcode:
- 2003APS..DPPLP1067M