LES ESTIMATION OF WIND LOADING ON HIGH-RISE BUILDING SURROUNDED BY OTHER BUILDINGS

－CFD wind-resistant design for buildings in a real urban district (Part 1)－

Abstract

 Large Eddy Simulation (LES) is expected to be adopted as an effective technique to evaluate wind load on buildings for wind-resistant design. For numerical prediction of wind pressures by LES, unstructured grid system is effective in terms of flexibility in generating computed models. In this paper, the fluctuating wind pressures on a high-rise building in a real urban district are examined using unstructured LES. Especially, focusing on the pressure distributions influenced by surrounding buildings, the method of model generation for accurate prediction is shown and the flow fields are studied to elucidate the mechanism of peak pressure occurrence.