双塔楼建筑风场及平均风荷载的数值模拟  

Numerical Simulation of Mean Wind Pressure And Wind flow Around Double-tower Tall Building

作　　者：彪仿俊[1] 孙炳楠[1] 沈国辉[1] 

机构地区：[1]浙江大学土木系,杭州310027

出　　处：《科技通报》2006年第1期77-83,共7页Bulletin of Science and Technology

摘　　要：本文对某高层双塔楼建筑进行风荷载和风场的数值模拟,湍流模型选择可实现的k-ε模型,计算得出了双塔周围的流场分布和结构上各个测点的风压,并通过与风洞试验数据进行比较证明了计算结果的准确性。论文概述了从建模到后处理中的一些细节问题,误差产生的原因以及双塔结构的特殊性对模拟效果的影响,重点讨论了数值模拟计算技术在复杂体型的双体高层建筑风荷载计算方面的可靠性。The bluff body flow of a double-tower tall building is numerically simulated using the CFD technology in this paper. The turbulence model used here is realizable k-ε model. The distribution of bluff body flow and the mean wind pressure coefficient are obtained. The simulating results are compared with the data obtained from the windtunnel experiment .The paper also discusses the wind-induced interference and the error-induced reasons. The reliability of numerical simulation in prediction of double-tower tall buildings＇ wind pressure is discussed also.

关 键 词：数值模拟 双塔楼建筑 可实现的k-ε模型 非平衡壁面函数 平均风压系数 流场分布 

分 类 号：TQ973.213[化学工程]