Simulation of wind flow around a building with a kappa-epsilon model

The three-dimensional numerical simulation of airflow around a building usi ng a k-epsilon two-equation turbulence model is presented in this paper. Se veral cases of numerical simulation of airflow around a building are carrie d out to estimate the influence of mesh spacing on simulated results. The a ccuracy of simulations is examined by comparing the predicted results with wind-tunnel experiments. It is confirmed that numerical simulations by mean s of the k-epsilon model reproduce the velocity fields well when using fine mesh resolution. In the latter part of the paper, the simulation method is applied to predict the flow field around a building with different width-t o-height ratios, under light wind conditions.