MHD, HEAT-TRANSFER AND STRESS-ANALYSIS FOR THE ITER SELF-COOLED BLANKET DESIGN

Magnetohydrodynamic (Mi-ID) effects of the liquid metal self-cooled bl anket proposed for ITER are discussed in this paper. Scoping calculati ons of heat transfer, MHD pressure drop and structure stresses at a st eady state for the self-cooled lithium/vanadium inboard blanket design have been performed in order to show if the blanket option can meet t he prescribed design criteria, or if modifications are required. The f inite element computer code ANSYS(TM) (DeSalvo and German, ANSYS User Manual, Swanson Analysis System, Inc., 1989) is used to compute two-di mensional temperature and stress distribution in the inboard blanket. The results of the investigation indicate that the ITER self-cooled li thium/vanadium blanket can satisfy the design criteria from the standp oint of heat transfer, MHD pressure drop and stresses. A comfortable s afety margin can be obtained if insulting materials are used to decoup le the conductive walls from the eddy currents resulting from the flow of liquid metals across magnetic fields.