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采用风洞试验和数值模拟相结合,对上海陆家嘴区域高度简化的建筑群风环境进行研究,重点对数值模拟方法的可靠性进行验证,同时还对风场类型对建筑群风环境的影响进行初步分析。结果表明:由于使用修正的壁面函数,来流边界条件得到较好的模拟,进一步提高了数值模拟方法的可靠性;地面附近D类风场的风速比大于B类风场的风速比。沿来流方向,建筑物迎风面的两侧以及两建筑物之间出现高风速比区域,而在建筑物上游和下游出现低风速比区域,这分别是由于分离流、沟道效应、驻点效应和遮挡作用引起的。
The combination of wind tunnel test and numerical simulation is used to study the highly simplified building wind environment in Shanghai Lujiazui area. The reliability of the numerical simulation method is mainly verified. At the same time, the influence of wind field type on the building wind environment is also preliminarily studied analysis. The results show that the flow boundary conditions are better simulated by using the modified wall function, which further improves the reliability of the numerical simulation method. The wind speed ratio of the D type wind field near the ground is greater than that of the B type wind field. The high wind speed ratio areas appear on both sides of the windward side of the building and between the two buildings in the direction of the incoming flow, whereas the areas of low wind speed ratio appear upstream and downstream of the building due to the separation flow, channeling effect, Effect and occlusion caused by.