Cooling of periodically heat-generated element under the convective-radiative heat transfer in a rotating domain with a thermally conducting base plate

Abstract

Convective heat transfer under an influence of thermal radiation in a rotating chamber has been investigated numerically. The cavity has periodically heat-generating source, cooling vertical walls and heat-conducting bottom wall. Governing equations have been formulated using stream function, vorticity and temperature. The considered set of control equations has been worked out employing the finite difference procedures. Streamlines and isotherms for different angles of rotation have been shown and described in detail. The effects of emissivity, angular velocity and bottom wall thickness have been illustrated using the flow rate, average heater temperature, mean convective and radiative Nusselt numbers. The results demonstrate that lower wall thickness can significantly reduce the mean heater temperature.