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Passive vibration control of pipe-in-pipe (PIP) Systems subjected to vortex induced vibration (VIV)

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Authors
Nikoo, H.
Bi, Kaiming
Hao, H.
Date
2017
Type
Conference Paper

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Nikoo, H. and Bi, K. and Hao, H. 2017. Passive vibration control of pipe-in-pipe (PIP) Systems subjected to vortex induced vibration (VIV), in Proceedings of the 27th International Ocean and Polar Engineering Conference, pp. 1271- 1276, Jun 25-30 2017. San Francisco, California, USA: ISOPE.
Source Title
Proceedings of the International Offshore and Polar Engineering Conference
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School of Civil and Mechanical Engineering (CME)
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Abstract

This paper proposes using modified pipe-in-pipe (PIP) system to mitigate vortex induced vibration (VIV). Numerical simulations are carried out to examine the effectiveness of the proposed method. Firstly, a semi-empirical oscillator model is developed and validated by an experimental test of a single pipe. The validated model is then extended to the modified PIP system, which is simplified as a structure-tuned mass damper (TMD) system in present study. The governing equation of vibration is solved in the time domain using MATLAB/Simulink programming. The results demonstrate that the carefully designed PIP system can significantly suppress VIV of offshore cylindrical structures up to 84%.