NUMERICAL INVESTIGATION OF SHROUDED FIN ARRAY UNDER COMBINED FREE AND FORCED CONVECTION

摘要

The influence of combined free and forced convection in a vertical shrouded fin is considered in this paper. Nusselt number, Nu, and friction factor multiplied by Reynolds number, fRe, are functions of the buoyancy force which is associated strongly with the geometry of the shrouded fin (the clearance above the fin tip and the spacing between adjacent fins). Nu and fRe increase nonlinearly with increasing the clearance above the fin tip. The results obtained from this work can be helpful in the characteristics evaluation of shrouded fins.