Numerical Simulation of Nature Convection and Heat Transfer of the Liquid LiPb in Cubic Enclosure with a Magnetic Field

The nature convection of the liquid LiPb, due to thermal diffusion, in the poloidal channel perpendicular to the strong magnetic field in the blanket has been considered and studied. The cubic enclosure filled by the liquid metal LiPb flow is assumed as the analyzed model. It was numerical simulated by three-dimensional CFD with special MHD code. The Hartmann number is from 20 to 200. The wall of the enclosure was heated by a uniform temperature and the other wall was cooled along two opposite vertical walls, all other walls being adiabatic. The momentum equation and electrical-magnetic equations for the liquid LiPb flow in the enclosure have given. It is assumed the nature convection be steady-state conditions. The velocity and temperature of the LiPb flow with differential Hartmann number is discussed. The temperature distribution is changed due to magnetic field. The heat convection is enhanced by the high Hartmann number which the magnetic field intensified the motion of the LiPb fluid in the side layer. There is a strong thermal coupling, modifying importantly the magnitude of the flow.