Simulation of MHD effects and thermal deformation in liquid metal blanket with flow channel insert

The magneto-thermo-fluid-structure coupled field is analyzed by use of CFD and FEM. A direct simulation of 3D liquid metal flow in the Dual Coolant Lead Lithium (DCLL) blanket is conducted to study the MHD effects and heat transfer influenced by material properties of FCI (Flow Channel Insert). The consistent and conservative scheme and PISO method on unstructured collocated meshes are employed to solve the incompressible Navier-Stokes equations with the Lorentz force included based on the electrical Potential formula. The finite element method is employed to study mechanical behaviors of FCI. The velocity distribution, MHD pressure drop, current stream lines and temperature distribution of blanket, thermal deformations and thermal stresses in FCI under external magnetic field are investigated. The effects of thickness and electric conductivity of a silicon carbide FCI on temperature field in the multi-physical field, thermal stresses and deformation are analyzed.