MHD and heat transfer analyses in PbLi radial channels for the EUROfusion WCLL breeding blanket

The Water Cooled Lithium Lead (WCLL) breeding blanket concept is the one of the PbLi-based concepts under development within the framework of the EUROfusion project. This concept is characterized by cooling the PbLi using water tubes embedded in the PbLi flow. In this work, the MHD coupling between the conductive tubes walls and the PbLi flow is studied for the geometrical and operational configuration of the WCLL. Velocity profiles are computed first considering a toroidal magnetic field using a fully developed flow approach. The obtained MHD velocity profiles are then used as an input for a 3D thermal-hydraulic computation of a WCLL channel. This includes the volumetric heat generation in PbLi and solid materials caused by the neutron flux.