MOTIONS OF OTEC PLATFORM IN WAVES AND FORCES ON MOORING CHAIN AND COLD WATER PIPE.

W. Koterayama, M. Nakamura, Y. Kyozuka, M. Ohkusu, T. Suhara

研究成果: Contribution to conferencePaper査読

1 被引用数 (Scopus)

抄録

The effects of hydrodynamic forces acting on the cold water pipe and mooring lines on motions of the OTEC platform are investigated experimentally and theoretically. The hydrodynamic forces acting on the cold water pipe and mooring chains oscillating in a water are obtained by using mode methods. The computer time needed for the calculations is very short, therefore these methods proposed in this paper are of much practical use. Calculated results of the bending moment and shearing force of the cold water pipe at its upper end and the horizontal and vertical components of the dynamic tension of the mooring chain at the mooring point are compared with those of experiments. They are in good agreements. Experiments and theoretical calculations on the motions of the moored OTEC platform show that the viscous drag forces acting on the cold water pipe and mooring chains have a great effect on the motion at its resonant period. They act as the viscous damping force for the motion of the platform at its resonant period, and reduce its magnification factor.

本文言語英語
ページ441-448
ページ数8
出版ステータス出版済み - 1 1 1987

All Science Journal Classification (ASJC) codes

  • 工学(全般)

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