EDGE2D code simulations of SOL flows and in–out divertor asymmetries in JET

EDGE2D simulations show that high SOL flows can be generated when an additional radial convective transport is applied in the SOL and pedestal region along with a ‘ballooning-like’ poloidal variation in transport. This model produces an inward particle flux at the inboard side of the plasma along with an enhanced outward flux at the outer mid-plane. Parallel Mach numbers can be produced at the top of the machine which are comparable in magnitude to those observed by the JET Mach probes. For the normal toroidal magnetic field direction, the parallel flow Mach number is about M=0.32 in this case. Applying these two additional mechanisms also allows experimental outer to inner target power and out–in divertor line emission intensity asymmetries to be qualitatively reproduced.