Slow drift damping due to drag forces acting on mooring lines

Masahiko Nakamura; W. Koterayama; Y. Kyozuka

doi:10.1016/0029-8018(91)90015-I

Slow drift damping due to drag forces acting on mooring lines

Masahiko Nakamura, W. Koterayama, Y. Kyozuka

Division of Earth Environment Dynamics

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Hydrodynamic forces acting on mooring lines are essential in the case of a slow drift oscillation of a floating structure, because drag forces acting on mooring lines act as the damping force and have a great effect on the slow drift oscillation. In this paper a time domain Modified Approximate Method for calculating the dynamic tension of mooring chain is presented. The calculated results of the slow drift oscillation of floating structure and dynamic tensions of mooring lines obtained by using this method are compared with the experimental ones. The calculated results are in good agreement with experimental ones.

Original language	English
Pages (from-to)	283-296
Number of pages	14
Journal	Ocean Engineering
Volume	18
Issue number	4
DOIs	https://doi.org/10.1016/0029-8018(91)90015-I
Publication status	Published - Jan 1 1991

All Science Journal Classification (ASJC) codes

Environmental Engineering
Ocean Engineering

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10.1016/0029-8018(91)90015-I

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abstract = "Hydrodynamic forces acting on mooring lines are essential in the case of a slow drift oscillation of a floating structure, because drag forces acting on mooring lines act as the damping force and have a great effect on the slow drift oscillation. In this paper a time domain Modified Approximate Method for calculating the dynamic tension of mooring chain is presented. The calculated results of the slow drift oscillation of floating structure and dynamic tensions of mooring lines obtained by using this method are compared with the experimental ones. The calculated results are in good agreement with experimental ones.",

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AU - Koterayama, W.

AU - Kyozuka, Y.

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Y1 - 1991/1/1

N2 - Hydrodynamic forces acting on mooring lines are essential in the case of a slow drift oscillation of a floating structure, because drag forces acting on mooring lines act as the damping force and have a great effect on the slow drift oscillation. In this paper a time domain Modified Approximate Method for calculating the dynamic tension of mooring chain is presented. The calculated results of the slow drift oscillation of floating structure and dynamic tensions of mooring lines obtained by using this method are compared with the experimental ones. The calculated results are in good agreement with experimental ones.

AB - Hydrodynamic forces acting on mooring lines are essential in the case of a slow drift oscillation of a floating structure, because drag forces acting on mooring lines act as the damping force and have a great effect on the slow drift oscillation. In this paper a time domain Modified Approximate Method for calculating the dynamic tension of mooring chain is presented. The calculated results of the slow drift oscillation of floating structure and dynamic tensions of mooring lines obtained by using this method are compared with the experimental ones. The calculated results are in good agreement with experimental ones.

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Slow drift damping due to drag forces acting on mooring lines

Abstract

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