LESによる高密度市街地内における移流・拡散による運動量輸送および市街地抗力の分析(都市・屋内環境(2),一般講演)

概要

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This study aims to clarify a relationship between drag force of buildings and urban air ventilation at pedestrian level. At the first step of the study, LES was applied to the flow within high dense cities with buildings of various heights, and distributions of pressures acting on building surfaces and surface shear stress on the ground and the building walls were examined in details. Contributions of the pressure differences and the surface shear stresses to the total drag force caused by a group of buildings were compared. It was confirmed that the pressure differences between windward and leeward surfaces on upper parts of high-rise buildings largely contribute to the total drag force. On the other hand, the momentum transport to the downward direction in front of the windward faces of the high-rise buildings is very large compared to those in other regions.
日本流体力学会の論文
2008-09-04