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| 倒品字形分布三个冷却塔的风致干扰效应研究 | |
| 引用本文： | 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). |
| 作者姓名： | 沈国辉 余关鹏 孙炳楠 楼文娟 李庆祥 杨仕超 |
| 作者单位： | 1. 浙江大学土木工程学系,浙江,杭州,310058 2. 中国联合工程公司,浙江,杭州,310022 3. 广东省建筑科学研究院,广东,广州,510500 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 针对呈倒品字形分布的三个冷却塔,采用风洞试验方法进行风致干扰效应研究.通过增加模型表面粗糙度的方法来补偿模型试验的雷诺数,应用POD方法进行风压点的加密和插值,计算单塔和三塔的阻力系数、升力系数和底部剪力系数等,并分析三塔的干扰系数随塔间距、风向角的变化规律.研究表明,三塔情况下,顺风向底部剪力平均值和极大值的干扰系数大部分都小于1,说明呈倒品字形分布的三塔对风通道形成阻挡,使后塔受到的总体阻力变小.横风向底部剪力极大值的干扰系数大部分超过1,最大值接近2,说明三塔情况下横风向的脉动效应非常显著. |
| 关 键 词： | 冷却塔 风荷载 风洞试验 干扰效应 本征正交分解法 |
Study of wind-induced interference effects on three adjacent cooling towers under upside-down triangular distribution |
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| SHEN Guo-hui,YU Guan-peng,SUN Bing-nan,LOU Wen-juan,LI Qing-xiang,YANG Shi-chao.Study of wind-induced interference effects on three adjacent cooling towers under upside-down triangular distribution[J].Acta Aerodynamica Sinica,2011,29(1). | |
| Authors: | SHEN Guo-hui YU Guan-peng SUN Bing-nan LOU Wen-juan LI Qing-xiang YANG Shi-chao |
| Institution: | SHEN Guo-hui1,YU Guan-peng2,SUN Bing-nan1,LOU Wen-juan1,LI Qing-xiang3,YANG Shi-chao3(1.Department of Civil Engineering,Zhejiang University,Hangzhou 310058,China,2.China United Engineering Corporation,Hangzhou 310022,3.Guangdong Provincial Academy of Building Research,Guangzhou 510500,China) |
| 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 coef... |
| Keywords: | cooling tower wind load wind tunnel test interference effect POD |
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