高層建物が密集する地域における強風乱流のLES解析 : フィリピン・マカティ地区を対象に予測された耐風設計用データの実用性検討

抄録

For aiming at realization of high level applications of CFD techniques to wind-resistant designs, the urban area densely arranged with high-rise buildings are analyzed by the LES which has smaller errors caused from modeling for turbulence than conventional simulations such as RANS and also predicts time fluctuations of strong winds and wind-pressures. Mean profiles of wind velocity in the urban area, and profiles of mean and fluctuating pressure coefficient and power spectrum density functions of wind pressure on high-rise buildings are examined by comparing with experimental results, and these characteristics calculated from present computation show nearly good agreement. Then possibility and unsolved problems for feasibility use of the LES method are revealed.