Oscillatory mixed convection in the jet impingement cooling of a horizontal surface immersed in a nanofluid-saturated porous medium

Oscillatory mixed convection in the jet impingement cooling of a partially heated horizontal surface immersed in a nanofluid-saturated porous medium is simulated and discussed in this study. This situation appears when the jet flow and the flow due to buoyancy have opposing effects and are in conflict for domination. The aim of the present contribution is to explore how governing parameters may alter these oscillations and the resulting heat exchange. It is demonstrated that the final steady or oscillatory flow response depends on the values of the Reynolds number, the Grashof number, and the Darcy number but not influenced by the medium porosity and the nanoparticles fraction.