MIXED CONVECTION FLOW AND HEAT-TRANSFER BETWEEN 2 CO-ROTATING POROUS DISKS WITH WALL TRANSPIRATION

In the present work, laminar mixed convection flow and heal transfer b etween two co-rotating disks with wall transpiration is investigated n umerically. Both thermal boundary conditions of uniform heat flux (UHF ) and uniform wall temperature (UWT) are considered. The Boussinesq ap proximation is invoked by taking into account the centrifugal buoyancy effects. The present paper particularly addresses the effects of wall transpiration, centrifugal buoyancy, Coriolis force, through-flow and wall-heating conditions. The numerical predictions reveal that either wall injection or wall suction has an appreciable effect on flow stru cture and heat transfer performance. In the case of hot-wall/cold-flui d (Gr(Omega) > 0), the centrifugal buoyancy has a suppression effect o n the skin friction and heat transfer rates. Copyright (C) 1996 Elsevi er Science Ltd.