Abstract
The rich phenomenology of internal transport barriers (ITBs) observed in tokamaks includes a poloidal spin-up precursor for balanced injection neutral beam heating and stepwise expansion of the barrier for unbalanced injection. Examples of numerical simulations of these phenomena are presented. Two drift wave based predictive transport models (GLF23 and multimode) are used. Both models include the suppression of ion temperature gradient modes as the E × B shear approaches the computed maximum linear growth rate. Modelling of discharges with ITBs from the DIII-D, JET and TFTR tokamaks are compared.
Original language | English |
---|---|
Pages (from-to) | 891-899 |
Number of pages | 9 |
Journal | Nuclear Fusion |
Volume | 41 |
Issue number | 7 |
DOIs | |
State | Published - Jul 2001 |
Externally published | Yes |