Abstract
This paper presents a numerical investigation of laminar mixed convection cooling of heat source embedded on the bottom wall of an enclosure filled with nanofluids for a variety of thermal boundary conditions at the top and sidewalls. The transport equations are solved numerically using the collocated finite volume method. For different configurations, the relevant parameters are the nanoparticles volume fraction (phi = 0%-20%), the length of the heat source (B = 0.2-0.8) and the different locations of the heat source (D = 0.2-0.8). Comparisons with previously published work on the bases of special cases are performed and found to be in excellent agreement. It is found that significant heat transfer enhancement can be obtained due to the presence on Cu-nanoparticles.