Simulation of flow over a wavy solid surface: comparison of turbulence models

Abstract

The CFD simulation of air flow over solid sinusoidal surface is presented. The flow conditions defined by Reynolds number based on bulk velocity (Re=hUb/ν=6760) and the ratio of the wave amplitude to the wavelength (ɑ/λ=0.05) induces turbulent flow with adverse pressure gradients. These are large enough to cause flow separation. For these reasons the Wilcox’s k-ω, k-ω SST and the k-ε V2F Reynolds-Averaged Navier-Stokes models were used. The profiles of velocity components, pressure and wall shear stress are presented in comparison with Direct Numerical Simulations results.