Mixed convection in an inclined channel with a discrete heat source

The effects of laminar forced flow on buoyancy-induced natural convection cells throughout the regions of natural, mixed, and forced convection have been numerically investigated. Emphasis is placed on the influence of the inlet flow velocity and the inclination angle of the channel with an electronic module. Calculations cover the ranges 10³⩽Gr⩽10³ and 0.1⩽Re⩽500 at Pr=0.71 (air). The results indicate that the overall Nusselt number of the module strongly depends on the inclination angle in the natural and mixed convection regimes, while the overall Nusselt number is nearly insensitive to the Grashof number and the orientation of the channel in the forced convection regime. As Gr increases at a fixed Re, the entrainment of the air from the downstream exit is observed for the aiding flow cases