THM evaluations of Li-based breeder percolation rates through SiCf-structures

A thermal-hydro-mechanical (THM) finite element model (FEM) is being developed and benchmarked in order to compute multi-phase/multi-species liquid metal (LM) flow rates through fiber materials coupled with the material thermal–mechanical (TM) behavior. The code advance large capabilities for the analysis of tritium/helium problems related to the design of fusion technology SiCf/LM systems. An application exercise is done concerning the evaluation of the percolation rates through a SiC-fibred in-contact membrane that represents an issue for the qualification of tritium dissolved in Pb–17Li recovery columns.