NUMERICAL SIMULATION OF WIND FLOW OVER URBAN AREA : Part 2 Variation of mean wind speed and turbulence intensity due to the density of buildings and houses

Abstract

Using the numerical simulation of the turbulent boundary layer over rough surfaces with a refined k- e turbulence model presented previous paper, a series of calculations were done on the characterized model cities. The change of the mean wind speed and the turbulence intensity due to the configuration of surface roughness was investigated. The variation of the thickness of the boundary layer, the profile of the mean wind speed and the intensity of turbulence against the density of surface roughness, i.e. buildings and houses, was obtained for the wind resistant design.