Effects of end condition and aspect ratio on aerodynamic properties of rectangular sectional model

WEN Qing; CHI Junhao; HUA Xugang; WANG Xiuyong; SUN Hongxin

doi:10.11729/syltlx20190088

Volume 34 Issue 4

Aug. 2020

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WEN Qing, CHI Junhao, HUA Xugang, et al. Effects of end condition and aspect ratio on aerodynamic properties of rectangular sectional model[J]. Journal of Experiments in Fluid Mechanics, 2020, 34(4): 36-43. doi: 10.11729/syltlx20190088

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Effects of end condition and aspect ratio on aerodynamic properties of rectangular sectional model

doi: 10.11729/syltlx20190088

WEN Qing^{1, 2
,},
CHI Junhao¹,
HUA Xugang^{2
,
,},
WANG Xiuyong¹,
SUN Hongxin¹

1.
Hunan Provincial Key Laboratory of Structures for Wind Engineering and Vibrational Control, College of Civil Engineering, Hunan University of Science and Technology, Xiangtan Hunan 411201, China
2.
Key Laboratory for Wind and Bridge Engineering of Hunan Province, Hunan University, Changsha 410082, China

Received Date: 2019-07-04
Rev Recd Date: 2019-11-13
Publish Date: 2020-08-25

Abstract

Abstract

End condition and aspect ratio of the sectional model are two important influence factors on wind tunnel tests. To investigate the effects of end condition and aspect ratio on the characteristics of aerodynamic force of the sectional models, wind tunnel tests are performed on a stationary B/D=5 rectangular sectional model with various end conditions and aspect ratios. The results indicate that:(1) the aerodynamic force on the rectangular cylinder can be significantly influenced by end condition and aspect ratio; (2) when the length of the cylinder is twice larger than the interference length of end condition, the aerodynamic force distributes in spanwise as an isosceles trapezoid, however, when the length of the cylinder is twice smaller than the interference length of end condition, the aerodynamic force distributes in spanwise as an isosceles triangle. More attentions should be paid to the design on aspect ratio of model for wind tunnel tests. A suitable large aspect ratio of the model may lead to reliable results.
- aerodynamic force,
- wind tunnel test,
- rectangular cylinder,
- end condition,
- aspect ratio

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References(19)

References

[1]	徐昕宇, 李永乐, 廖海黎, 等.双层桥面桁架梁三塔悬索桥颤振性能优化风洞试验[J].工程力学, 2017, 34(5):142-147. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gclx201705016 XU X Y, LI Y L, LIAO H L, et al. Flutter optimization of a double-deck truss-stiffened girder three-tower suspension bridge by wind tunnel tests[J]. Engineering Mechanics, 2017, 34(5):142-147. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gclx201705016
[2]	顾明, 黄鹏, 周晅毅, 等.广州新电视塔模型测力风洞试验及风致响应研究Ⅰ:风洞试验[J].土木工程学报, 2009, 42(7):8-13. GU M, HUANG P, ZHOU X Y, et al. Wind tunnel force balance test and wind-induced responses of the Guangzhou New TV Tower structure I:wind tunnel test[J]. China Civil Engineering Journal, 2009, 42(7):8-13.
[3]	周帅, 陈政清, 牛华伟.矩形细杆涡振幅值和驰振性能的对比风洞试验[J].中国公路学报, 2014, 27(1):64-75. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zgglxb201401010 ZHOU S, CHEN Z Q, NIU H W. Comparative experiment on vortex-induced vibration amplitude and galloping of slender rectangular cylinder[J]. China Journal of Highway and Transport, 2014, 27(1):64-75. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zgglxb201401010
[4]	刘慕广, 陈政清.不同截面参数H型吊杆的气动性能[J].工程力学, 2013, 30(5):221-226. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gclx201305033 LIU M G, CHEN Z Q. Aerodynamic performance of h-section hangers with different sectional parameters[J]. Engineering Mechanics, 2013, 30(5):221-226. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gclx201305033
[5]	郑云飞, 刘庆宽, 刘小兵, 等.端部状态对斜拉索节段模型气动特性的影响[J].工程力学, 2017, 34(B06):192-196. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gclx2017z1033 ZHENG Y F, LIU Q K, LIU X B, et al. Influence of end conditions on aerodynamic force of section models for stay-cables[J]. Engineering Mechanics, 2017, 34(B06):192-196. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gclx2017z1033
[6]	SZEPESSY S, BEARMAN P W. Aspect ratio and end plate effects on vortex shedding from a circular cylinder[J]. Journal of Fluid Mechanics, 1992, 234:191-217. doi: 10.1017/S0022112092000752
[7]	FOX T A, WEST G S. On the use of end plates with circular cylinders[J]. Experiments in Fluids, 1990, 9(4):237-239. doi: 10.1007/BF00190426
[8]	NAMIRANIAN F. Fluctuating lift on cylinders of rectangular cross section in smooth and turbulent flows[D]. Vancouver: University of British Columbia, 1985.
[9]	郑云飞, 刘庆宽, 马文勇, 等.端板对二维矩形风洞试验模型气动特性的影响[J].实验流体力学, 2017, 31(3):38-45. http://www.syltlx.com/CN/abstract/abstract11022.shtml ZHENG Y F, LIU Q K, MA W Y, et al. Effects of end plates on aerodynamic force of rectangular prisms in wind tunnel test[J]. Journal of Experiments in Fluid Mechanics, 2017, 31(3):38-45. http://www.syltlx.com/CN/abstract/abstract11022.shtml
[10]	NORBERG C. An experimental investigation of the flow around a circular cylinder:influence of aspect ratio[J]. Journal of Fluid Mechanics, 1994, 258:287-316. doi: 10.1017/S0022112094003332
[11]	NORBERG C. Fluctuating lift on a circular cylinder:review and new measurements[J]. Journal of Fluids and Structures, 2003, 17(1):57-96. doi: 10.1016/S0889-9746(02)00099-3
[12]	罗东伟.开槽箱梁涡激振动及其控制措施研究[D].上海: 同济大学, 2013. LUO D W. Vortex-induced vibration of slottted box girder and its control measures[D]. Shanghai: Tongji University, 2013.
[13]	商东洋. 1: 6矩形断面涡激共振的模型尺度效应试验研究[D].长沙: 湖南大学, 2015. SHANG D Y. Experimental study on model scale effect of vortex-induced vibrations for 1: 6 rectangular cross-sections[D]. Changsha: Hunan University, 2015.
[14]	HANSEN S O, SROUJI R G, ISAKSEN B, et al. Vortex-induced vibrations of streamlined single box girder bridge decks[C]//Proc of the 14th International Conference on Wind Engineering. 2015.
[15]	张伟, 葛耀君, 魏志刚, 等.分离双箱高低雷诺数涡振的试验研究[J].空气动力学学报, 2008, 26(3):356-359. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=kqdlxxb200803015 ZHANG W, GE Y J, WEI Z G, et al. Experiments on vortex induced vibration of twin-box bridge sections in high and low Reynolds numbers[J]. Acta Aerodynamica Sinica, 2008, 26(3):356-359. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=kqdlxxb200803015
[16]	鲜荣, 廖海黎.不同尺度扁平箱梁节段模型涡激振动风洞试验[J].桥梁建设, 2010, 40(2):9-13. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=qljs201002003 XIAN R, LIAO H L. Wind tunnel test for vortex-induced vibration of different geometry scale sectional models of flat box girder[J]. Bridge Construction, 2010, 40(2):9-13. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=qljs201002003
[17]	杨咏漪, 陈克坚, 李明水, 等.韩家沱长江大桥高低雷诺数涡激振动试验研究[J].桥梁建设, 2015, 45(3):76-81. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=qljs201503013 YANG Y Y, CHEN K J, LI M S, et al. Test study of vortex-induced vibration of Hanjiatuo Changjiang River Bridge at high and low Reynolds numbers[J]. Bridge Construction, 2015, 45(3):76-81. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=qljs201503013
[18]	BRUNO L, SALVETTI M V, RICCIARDELLI F. Benchmark on the aerodynamics of a rectangular 5:1 cylinder:an overview after the first four years of activity[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2014, 126:87-106. doi: 10.1016/j.jweia.2014.01.005
[19]	LIU X B, CUI Y, LIU Q K. Wind tunnel study on spanwise correlation of aerodynamic forces on a 5: 1 rectangular cylinder[C]//Proceedings of the 8th Asia-Pacific Conference on Wind Engineering. 2013.