Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Experiment on Sloshing of Annular Cylindrical Tank for Development of Attitude Control Devices of Floating Offshore Wind Turbines

부유식 해상풍력발전기의 자세제어장치 개발을 위한 환형 실린더 탱크의 슬로싱 실험

  • Seo, Myeongwoo (Graduate School of Mechanical Engineering, Pusan National University) ;
  • Jeong, Weuibong (School of Mechanical Engineering, Pusan National University) ;
  • Cho, Jinrae (Research and Development Institute, Midas IT Co. Ltd.)
  • Received : 2012.09.05
  • Accepted : 2012.11.19
  • Published : 2013.01.20
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Abstract

The floating offshore wind turbines are usually exposed to the wave and wind excitations which are irregular and undirected. In this paper, the sloshing characteristics of annular cylindrical tank were experimentally investigated to reduce the structural dynamic motion of floating offshore wind turbine which is robust to the irregular change of excitation direction of wind and wave. The formula for the natural sloshing frequencies of this annular cylindrical tank was derived theoretically. In order to validate this formula, the shaking equipment was established and frequency response functions were measured. Two types of tank were considered. The first and second natural sloshing frequencies were investigated according to the depth of the water. It has been observed that between theoretical and experimental results shows a good agreement.

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References

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  1. Numerical Investigation on Surge Motion of a Rectangular Floating Body due to Inner Sloshing Phenomena vol.23, pp.7, 2013, https://doi.org/10.5050/KSNVE.2013.23.7.662