Numerical Prediction of the Boundary-Layer Flow Over the Bolund Hill: Assessment of Turbulence Models and Advection Schemes

The WindStation software package is applied to simulate the wind field over the Bolund hill. The standard, ReNormalization Group (RNG), realizable, and limited-length k−ε turbulence models are tested, along with the quadratic upstream interpolation for convective kinetics (QUICK) and hybrid advection schemes. Comparisons with experimental results are made for the speed-up and turbulence kinetic energy (TKE) increase. The adopted mesh is Cartesian uniform in the horizontal plane and terrain following with a variable expansion factor in the vertical direction. The QUICK advection scheme leads to better agreement with the experimental data than the hybrid scheme, in particular for the TKE increase. The RNG and standard k−ε turbulence models show the best performance for speed-up and for TKE increase, respectively.