Vortex-induced Vibration Control of a Stay Cable Based on the Passive-suction-jet Method

被引：0
|
作者：
Chen W.-L. [1 ,2 ]
Chen G.-B. [1 ,2 ]
Huang Y.-W. [1 ,2 ]
Li H. [1 ,2 ]
机构：
[1] Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin, 150090, Heilongjiang
[2] Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin, 150090, Heilongjiang
来源：
Zhongguo Gonglu Xuebao/China Journal of Highway and Transport | 2019年 / 32卷 / 10期
关键词：
Bridge engineering; Damping ratio; Passive suction jet; Speed fluctuation; Vortex induced vibration; Wind tunnel test;
D O I：
10.19721/j.cnki.1001-7372.2019.10.021
中图分类号：
学科分类号：
摘要：
Cable structures of stay-cable bridges are characterized by a high slenderness ratio, low damping, and low stiffness, which probably contribute to the flow-induced vibration of cables. A vortex-induced vibration (VIV) is a type of amplitude-limited flow-induced vibration that can be induced at a low wind speed and is thus a frequent occurrence on stay cables. This study proposed a passive-suction-jet method to suppress the VIV of cables. A wind tunnel experiment was conducted to investigate the control effects of passive-suction-jet rings applied to a cylinder. It was found that the wind speed range of VIV becomes considerably narrow and the amplitude is much smaller under controlled conditions. The VIV is completely eliminated at some proper intervals of passive-suction-jet-ring layouts. Based on the surface pressure distribution, it was verified that the fluctuating value of pressure and wind load are considerably restrained. The mean drag is suppressed because of the increasing plateau value of the leeward surface pressure. Spectral analysis indicates that the control method can effectively change the mode of vortex shedding and weaken the strength of the vortex shedding process. The wake speed profile was finally presented in this research, which confirmed that the width of the wake region and speed fluctuation value are smaller under controlled conditions. The periodic and alternative vortex shedding behind the controlled case is also notably suppressed. Jet rings were equipped on the three-dimensional flexible cable model to alleviate the amplitude of a three-order VIV. In addition, the control effectiveness is stronger with the smaller space between adjacent jet rings. © 2019, Editorial Department of China Journal of Highway and Transport. All right reserved.
引用
收藏
页码：222 / 229
页数：7
相关论文
共 20 条
  • [1] Zuo D., Jones N.P., Interpretation of Field Observations of Wind and Rain-wind-induced Stay Cable Vibrations, Journal of Wind Engineering and Industrial Aerodynamics, 98, pp. 73-87, (2010)
  • [2] Li S.-Y., Sun W.-F., Chen Z.-Q., Experimental Investigation on Aerodynamic Forces on Stay Cable and Rivulet by Using Forced Vibration System, China Journal of Highway and Transport, 26, 2, pp. 85-93, (2013)
  • [3] Chen W.L., Li H., Hu H., An Experimental Study on a Suction Flow Control Method to Reduce the Unsteadiness of the Wind Loads Acting on a Circular Cylinder, Experiments in Fluids, 55, pp. 1707-1726, (2014)
  • [4] Fransson J.H.M., Konieczny P., Alfredsson P.H., Flow Around a Porous Cylinder Subject to Continuous Suction or Blowing, Journal of Fluids and Structures, 19, 8, pp. 1031-1048, (2004)
  • [5] Feng L.H., Wang J.J., Circular Cylinder Vortex-synchronization Control with a Synthetic Jet Positioned at the Rear Stagnation Point, Journal of Fluid Mechanics, 662, pp. 232-259, (2010)
  • [6] Feng L.H., Wang J.J., Synthetic Jet Control of Separation in the Flow Over a Circular Cylinder, Experiments in Fluids, 53, pp. 467-480, (2012)
  • [7] Feng L.H., Wang J.J., Pan C., Effect of Novel Synthetic Jet on Wake Vortex Shedding Modes of a Circular Cylinder, Journal of Fluids and Structures, 26, pp. 900-917, (2010)
  • [8] Benard N., Moreau E., Response of a Circular Cylinder Wake to a Symmetric Actuation by Non-thermal Plasma Discharges, Experiments in Fluids, 54, pp. 1467-1485, (2013)
  • [9] Wu C.J., Wang L., Wu J.Z., Suppression of the Von Kármán Vortex Street Behind a Circular Cylinder by a Travelling Wave Generated by a Flexible Surface, Journal of Fluid Mechanics, 574, pp. 365-391, (2007)
  • [10] Zdravkovich M., Review and Classification of Various Aerodynamic and Hydrodynamic Means for Suppressing Vortex Shedding, Journal of Wind Engineering and Industrial Aerodynamics, 7, pp. 145-189, (1981)
12