Experimental study on aerodynamic interference effect of two square cylinders in a tandem arrangement

被引：0

作者：

Du X. ^{[1
,2
]}

Xu H. ^{[1
]}

Ma W. ^{[3
]}

Dai C. ^{[2
,4
]}

机构：

[1] Department of Civil Engineering, Shanghai University, Shanghai

[2] Wind Engineering and Aerodynamic Flow Control Research Center, Shanghai University, Shanghai

[3] Wind Engineering Research Center, Shijiazhuang Tiedao University, Shijiazhuang

[4] Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai

来源：

Jianzhu Jiegou Xuebao/Journal of Building Structures | 2019年 / 40卷 / 11期

关键词：

Aerdynamic correlation; Aerodynamic interference; Non-Gaussian feature; Two tandem square cylinders; Wind tunnel test;

D O I：

10.14006/j.jzjgxb.2018.0282

中图分类号：

学科分类号：

摘要：

To clarify aerodynamic interference between two square cylinders in tandem arrangement, the surface wind pressures of the two cylinders were measured simultaneously by wind tunnel tests at Reynolds number Re=8.0×104 and P/B=1.25-5, where P is the center-to-center spacing of the two cylinders and B is the breadth of the square cylinder. Aerodynamic characteristics of the two square cylinders with varying spacing ratio were investigated. The aerodynamic correlations between the two cylinders (inter-cylinder) and different spanwise sections of cylinders (intra-cylinder) were studied as well. The distribution regions of non-Gaussian wind pressure along the circumferential direction were presented. Results show that the critical spacing ratio of the tandem square cylinders is between 3 and 3.5, which produces a discontinuous jump of aerodynamic forces. The aerodynamic correlations change dramatically with the variation of spacing ratio. Specifically, intra-cylinder aerodynamic correlations of the two tandem square cylinders with P/B=1.25 are much greater than those of the single square cylinder. Furthermore, the wind pressure non-Gaussian regions of the two tandem cylinders are presented, which change significantly with the spacing ratio and show different distribution patterns compared with the single square cylinder. © 2019, Editorial Office of Journal of Building Structures. All right reserved.

引用

页码：27 / 34

页数：7

共 17 条

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