高层双塔楼绕流风场效应的数值预测

在一高层双塔楼静力风载风洞试验的基础上,采用时均数值模拟的方法,对其绕流风场进行了模拟,获得了风场的绕流特点和塔楼表面风压的分布规律．通过风压的模拟计算值与试验值的比较,表明以数值方法预测气动干扰强烈的绕流风场是准确和可行的．

NUMERICAL PREDICTION OF WIND-FLOW EFFECT ON A TWIN-TOWER TALL BUILDING

Wind flow around twin-tower tall buildings is generally complicated and there is no simple method or laws for determination of the induced surface pressures on such buildings. Therefore study and prediction of wind effect on this type of buildings are necessary. Based on the wind tunnel test of surface pressures on a twin-tower tall building, the wind flow around the building was predicted using the time-averaged numerical simulation technique. The wind-flow characteristics and the law of pressure distributions were summarized accordingly. Through comparison of the computed wind pressures with the corresponding wind tunnel test data, it indicates that the numerical simulation technique is accurate and feasible in prediction of the wind flow involving strong aerodynamic interference.