Application of computational techniques for studies of wind pressure coefficients around an odd-geometrical building

摘要

Most studies on wind flows around buildings are focused on the flow fields of buildings with prismatic shapes. Only a few works on wind flows around odd-geometrical buildings are reported. Comprehensive studies for the flow phenomena in odd-geometrical buildings are of significance for practical building construction and heating-ventilating-air conditioning applications. Characteristics of approaching wind are determined by the climate data based on the history of typhoons that have passed through Korea. The wind characteristics obtained by the statistical data are used for numerical simulations. Three-dimensional wind flows around the model of odd-geometrical building are simulated using the finite volume method. Velocity vectors and average-wind-pressure coefficients for equivalent static load are calculated by numerical results. The magnitudes of the wind pressure coefficients for the model building are relatively small compared with those of prismatic-shaped buildings. The largest average-wind-pressure coefficient for southwestern wind of 1.04 can be found near the top on the south wall for an odd-geometrical building with wind openings, the average-wind-pressure coefficients are decreased by approximately 19–27% on the windward surfaces and 32–53% on the leeward surfaces compared with those for buildings with prismatic shapes.