| The current numerical investigation will examine the effect of impinging mixed convection air jet on the heat transfer rate of a flat parallel plate finned heat sink. The application of CFD (Computational Fluid Dynamics) in tackling such a problems is utilized to predict the effect of various parameters on the mixed convection heat transfer regime. Mixed convection is a common phenomenon in electronics components cooling, yet rarely studied. A three-dimensional numerical model was developed to evaluate the effects of the nozzle diameter (d), nozzle-to-target vertical placement (H/d), Rayleigh number and the jet Reynolds number on the heat transfer rates from a discrete heat source. Simulations were performed for a Prandtl number of 0.7 and for Reynolds numbers ranging from 100 to 5000. The governing equations were solved in the dimensionless form using a commercial finite-volume package. A standard k-ϵ turbulence model was used. (Abstract shortened by UMI.)... |
