MHD simulation of the liquid metal/helium gas dual-cooled waste transmutation blanket for FDS

Numerical simulation of magnetohydrodynamic (MHD) flow is implemented by using the commercial code package PHOENICS, in which the momentum source term of Lorentz force is added by applying FORTAN subroutine. Assuming simplified condition of a square duct, the numerical approach is applied to simulate the velocity profile in MA-zone in the design of dual-cooled waste transmutation blanket (DWTB) for a fusion-driven sub-critical system (FDS). The high velocity of closing FW side will improve the heat transfer between liquid metal and the walls of duct, due to high Hartmann number, but the MHD pressure drop will be increased. The compromise between the heat transfer and MHD pressure drop can be taken as reference for the design of the transmutation blanket.