NUMERICAL STUDY OF FORCED FLOW IN A BACK-STEP CHANNEL THROUGH POROUS LAYER

Abstract

In this work, we present a numerical solution for laminar and turbulent convective heat transfer in a backward-facing step channel through a porous insert. In addition to the NavierStokes equation for the fluid region, Brinkman-Forchheimerextended Darcy’s equation is introduced into the numerical solver to model the porous medium. In the turbulent flow scenarios, we use a two-equation k-e model with wall function for both the fluid region and the porous medium. The results obtained from the present study concur with existing benchmarks. For the turbulent flow results, it is observed that the amount of flow resistance offered by the porous insert is more heavily dependent on its width than the permeability.