Simulation of ASDEX Upgrade Edge Plasma in the H-Regime

Several simulations of the L-regimes of ASDEX Upgrade edge plasma have been performed with the B2 SOLP S5.0 2D fluid transport code for a wide range of parameters. A conclusion has been made that the radial electric field in the separatrix vicinity is close to the neoclassical value. The poloidal E × B drifts and compensating parallel fluxes in the scrape-off layer are larger in the H-mode due to steeper gradients while the qualitative pattern of the flows is similar to that of the L-mode.