COMPARATIVE STUDY OF HALL EFFECTS ON COMBINED FREE AND FORCED CONVECTIVE MHD FLOW OF MERCURY AND LIQUID SODIUM THROUGH A CHANNEL AT 20℃ IN THE PRESENCE OF HEAT ABSORBING SINKS

摘要

Hydro magnetic free and forced convection in a parallel plate channel permeated by a transverse magnetic field has been considered taking Hall effects into account of Mercury and liquid sodium at 20℃ in the presence of heat absorbing sinks to make a comparative study. When there is a uniform axial temperature variation along the walls, the primary flow shows incipient flow reversal at the upper plate for an increase in temperature along the plate. Similarly flow reversal at the lower plate occurs for a decrease in temperature along that plate. Hall currents are found to exert a destabilizing influence on the flow. The skin-friction for the cross-flow increases with the Hall parameter. The induced magnetic field and the heat transfer characteristics in the flow are also considered with heat absorbing sinks.