MHD considerations for the DCLL inboard blanket and access ducts

The pre-conceptual design for the US DEMO inboard dual-coolant lead–lithium breeding blanket is introduced for the first time followed by the assessment for the most important magnetohydrodynamic issues for the blanket module itself and access ducts. The considered issues include: (i) the magnetohydrodynamic pressure drop, (ii) electric insulation in poloidal flows using the silicon carbide flow channel insert, and (iii) countercurrent flows in the access ducts.