平塚市上空の気流性状の数値シミュレーション

Abstract

A turbulent flow over a real city：Hiratsuka, was calculated by a refined k-εturbulence model which incorporates the effect of surface roughness using configuration of roughness elements, i.e.buildings and houses. The calculated results were compared with the observed data and examined. The calculation simulates the deceleration of wind speed and the acceleration of the generation of kinetic energy near the ground where the buildings are densely distributed. The high speed wind flow along the river was also calculated.