Numerical study of confined slot jet impinging on porous metallic foam heat sink

摘要: Abstract This study numerically investigates the impinging cooling of porous metallic foam heat sink. The analyzed parameters ranges comprise e = 0.93/10 PPI Aluminum foam, L/W = 20, Pr = 0.7, H/W = 2–8, and Re = 100–40,000. simulation results exhibit that when Re is low (such as Re = 100), Numax occurs at stagnation point (i.e. X = 0). However, Reynolds number increases, would move downwards, i.e. narrowest part between recirculation zone heating surface. Besides, extent to which inlet thermal boundary condition influences prediction accuracy Nusselt increases with a decreasing H/W forced convective effect. application effect can be neglected are proposed. Lastly, comparing our those in other studies reveals transfer performance sink 2–3 times large without it. resistance also 30% less than plate fin for same volumetric flow rate 5.3 mm jet nozzle width. Therefore, enhances cooling.