The purpose of this study was to investigate the effects of voids in tall buildings on the surrounding wind environment. With the development of modular technology, there has been a new method of building high-rise buildings. Currently, more and more high-rise buildings often use void spaces to reduce the wind resistance and utilize wind turbines by using wind power to create sky gardens. In this study, CFD (computer fluid dynamic) technology was used to simulate the wind environment around the buildings. The research focuses on the size, distribution and quantity of the concavity, which usually is defined as sky gardens. It is found that when the area of the opening is the same, the more number of opening, the more strengthened and distributed vertical wind velocity behind the building can be. The wind shadow area at the pedestrian height is further reduced. For holes distribution, the optimum ratio of the spacing between concavities to the void size for wind environment of tall buildings ranges from 1 to 3, which can disperse the surrounding heat in more efficiency and weaken the wind velocity in the lowest level. Therefore, in high-rise buildings, the number and distribution of the openings will have different effects on the wind environment around the buildings.

中文翻译：

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高层建筑空隙对风环境的影响研究


本研究的目的是调查高层建筑中的空隙对周围风环境的影响。随着模块化技术的发展，出现了建造高层建筑的新方法。目前，越来越多的高层建筑经常利用空隙空间来减少风阻，并利用风力涡轮机利用风力打造空中花园。本研究采用CFD（计算机流体动力学）技术来模拟建筑物周围的风环境。研究重点是凹面的大小、分布和数量，通常被定义为空中花园。研究发现，当洞口面积相同时，洞口数量越多，建筑物后方的垂直风速就越加强和分布。行人高度处的风影面积进一步减小。对于孔的分布，对于高层建筑的风环境，凹部间距与空隙尺寸的最佳比例为1～3，这样可以更有效地散发周围的热量，并减弱最低层的风速。因此，在高层建筑中，洞口的数量和分布会对建筑周围的风环境产生不同的影响。