市街地上空における気流性状の数値計算 : その２ 建物の密度変化に伴う平均風速および乱れの強さの変化

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.