结构工程师2017，Vol.33Issue(5)：118-124,7.
角部处理对高层建筑风荷载影响的数值模拟
Numerical Simulation of Wind Pressure Characteristics on Rectangular Tall Buildings with Various Corner Shapes
摘要
Abstract
High buildings with different corner shapes are numerical simulated based on the CFD (computational fluid dynamics) software FLUENT.Firstly,a standard high building is numerical simulated by using three different turbulence models,Realizable k-ε,RNG k-ε and Reynolds stress model.By comparing with the results from a wind-tunnel test,the numerical results are proved to be in good agreements with experimental results except from the separation regions.Reynolds stress model can greatly simulate the complex flow near the wall for the flow anisotropy hypothesis.Then,two same-sized buildings but with chamfered and rounded comers are numerical simulated with Reynolds stress model.Results show that wind loads tend to decrease because of corner modification.the shear layers separated from the chamfered and rounded comers approach the side surface.While wind pressures on leeward face of chamfer and round-cornered models reduce by 15％ and 35％ respectively due to the reduction of wake width and vortex size.关键词
数值模拟/高层建筑/切角/圆角/风荷载Key words
numerical simulation/tall buildings/chamfered corner/rounded corner/wind load引用本文复制引用
郑毅敏,庄翔,郑晓芬,董欣..角部处理对高层建筑风荷载影响的数值模拟[J].结构工程师,2017,33(5):118-124,7.基金项目
上海市青年科技启明星计划(15QB1404800) （15QB1404800）
