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Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
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Author | Kang, Zh Zhai, Yunhe Song, Ruxin Sun, Liping |
Copyright Year | 2014 |
Abstract | In this paper, model tests were carried out to investigate two degrees of freedom VIV of horizontally-laid cylinders with diameters of 5cm, 11cm, 20cm and length 120cm and compared their vibration trajectories. The test results showed that the in-line and cross-flow vibration frequency of different scale cylinders demonstrate “multi frequency” phenomenon, that is, the in-line vibration frequency is not only twice but also once or four times as much as the cross-flow vibration frequency in some scale, natural frequency and reduced velocity conditions. Also, the cross-flow multi-frequency vibration phenomenon occurred. The trajectory of the vibration cylinder differentiated from the traditional “8” shape accordingly. The vibration trajectory, especially of small-scale cylinder, changed in most conspicuous manner. Through the initial research and analysis, it was found that in addition to in-line and cross-flow natural vibration frequency and the flow velocity, the shape of cylinders was also one of the main causes leading to different vibration trajectory forms. |
Sponsorship | Ocean, Offshore and Arctic Engineering Division |
File Format | |
ISBN | 9780791845400 |
DOI | 10.1115/OMAE2014-23591 |
Volume Number | Volume 2: CFD and VIV |
Conference Proceedings | ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering |
Language | English |
Publisher Date | 2014-06-08 |
Publisher Place | San Francisco, California, USA |
Access Restriction | Subscribed |
Subject Keyword | Degrees of freedom Vibration Cross-flow Oscillating frequencies Trajectories (physics) Shapes Flow (dynamics) Cylinders Vortex-induced vibration |
Content Type | Text |
Resource Type | Article |
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