International Communications in Heat and Mass Transfer

article i nfo 7 8 Available online xxxx 9 12 Keywords: 13 Turbulence modeling 14 Porous media 15 Heat transfer 16 Natural convection 17 This work investigates the influence of porosity and thermal conductivity ratio on the Nusselt number of a cavity 18 filed with a fluid saturated porous substrate. The flow regime considered intra-pore turbulence and a 19 macroscopic k-e model was applied. Heat transfer across the cavity assumed the hypothesis of thermal 20 equilibrium between the solid and the fluid phases. Transport equations were discretized using the control21 volume method and the system of algebraic equations was relaxed via the SIMPLE algorithm. Results showed 22 that when using the one energy equation model under the turbulent regime, simulated with a High Reynolds