This work is about prediction of the pressure distribution on building surfaces due to the natural wind, with computational fluid dynamics simulations on meshes that are as coarse as possible. By coarse meshes is meant that the number of cells is not higher than one million. To accurately resolve the smallest flow scales, grids with tens of millions of cells would be required, leading to unrealistic computational times with the currently available computer resources. So, the challenge of the work is to investigate how reliable pressure distribution predictions can be obtained on computational...