Jet Impingement Cooling of a Finite Thickness Solid Layer Conjugated with Porous Medium

Abstract

The present study numerically investigates the mixed convection-conduction problem of impingement cooling of a finite thickness solid wall conjugated with a porous medium. The heat transfer is investigated over wide ranges of governing parameters: Rayleigh number (50 ≤ Ra ≤ 100), Péclet number (1 ≤ Pe ≤ 10³), solid wall thickness (0.05 ≤ H ≤ 0.25), heat transfer coefficient parameter (0.1 ≤ H _v  ≤ 10), and solid wall thermal conductivity (0.24 ≤ k _w  ≤ 240). The results shows that the total average Nusselt numbers can be increased with the decrease in H and increase in k _w and H _v . Opposing mixed convection is demonstrated to occur and the minimum value of average Nusselt numbers for fluid are found except for a low value of k _w .