Abstract:
Velocity and turbulence property profiles are derived for an equilibrium pressure driven atmospheric boundary layer for CFD models using the k-ε turbulence model. It is shown that using these profiles as the inlet conditions on an empty domain results in outlet profiles which are almost identical to the inlet values. It is also shown that using profiles intended for a shear driven situation, but without the driving shear stress, leads to significant changes as the flow relaxes towards matching the free slip boundary condition at the top of the domain.