空气动力学学报2011，Vol.29Issue(1)：107-113,7.
倒品字形分布三个冷却塔的风致干扰效应研究
Study of wind -induced interference effects on three adjacent cooling towers under upside- down triangular distribution
摘要
Abstract
Wind tunnel tests were employed to study wind -induced interference effects on three adjacent cooling towers under upside - down triangular distribution. The technique of adding roughness on model surface was applied to compensate for the Reynolds number effect due to model tests. Then the POD method was used to interpolate the wind pressures on the towers. After that, drag coefficients, lift coefficients and base shear coefficients on the isolated tower and three adjacent towers were calculated. Based on these coefficients, interference factors with respect to tower -to - tower distances and wind azimuths were analyzed. Results from this study show that the interference factors of both the mean and maximum base shear in along- wind direction under three towers condition are mostly less than 1. This indicates that the three towers arranged in upside - down triangle generally form a blockage against the passing of the wind, resulting in a reduction of total resistance on the latter tower. Most of the interference factors of maximum base shear in crosswind direction is larger than 1 with the biggest value close to 2,indicating that the fluctuating effects in crosswind direction under three towers condition are significant.关键词
冷却塔/风荷载/风洞试验/干扰效应/本征正交分解法Key words
cooling tower/ wind load/ wind tunnel test/ interference effect/ POD分类
航空航天引用本文复制引用
沈国辉,余关鹏,孙炳楠,楼文娟,李庆祥,杨仕超..倒品字形分布三个冷却塔的风致干扰效应研究[J].空气动力学学报,2011,29(1):107-113,7.基金项目
国家自然科学基金资助项目(50608063). （50608063）
