Abstract
Numerical simulations are performed of the turbulent flow and thermal field in a structured porous media. The geometry of interest is an open lattice structure that is made up of mutually orthogonal, millimeter-scale, thermally conductive cylindrical elements. A large-eddy simulation (LES) is performed and the results are used as reference data to evaluate the performance of three commonly used Reynolds Averaged Navier-Stokes (RANS) models: the Spalart-Allmaras model (SAM), the k-ω model (KWM) and the shear stress transport k-ω model (KWM/SST). Mean velocities, turbulent kinetic energy profiles, and turbulent viscosity predictions are compared as well as friction factor, wall shear stress and Stanton number.
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