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Quasisteady theory for the hydrodynamic forces on a circular cylinder undergoing vortex-induced vibration

Vortex-induced vibrations of a rigid circular cylinder were studied by constructing a theory based on a wake oscillator model under quasisteady approximations, thereby evaluating vortex-induced hydrodynamic forces acting on the cylinder. A lock-in limit line representing the boundary for the occurre... Full description

Journal Title: Journal of Marine Science and Technology 2009, Vol.14(3), pp.285-295
Main Author: Nishi, Yoshiki
Other Authors: Kokubun, Kentaroh , Hoshino, Kunihiro , Uto, Shotaro
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0948-4280 ; E-ISSN: 1437-8213 ; DOI: 10.1007/s00773-008-0036-z
Link: http://dx.doi.org/10.1007/s00773-008-0036-z
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recordid: springer_jour10.1007/s00773-008-0036-z
title: Quasisteady theory for the hydrodynamic forces on a circular cylinder undergoing vortex-induced vibration
format: Article
creator:
  • Nishi, Yoshiki
  • Kokubun, Kentaroh
  • Hoshino, Kunihiro
  • Uto, Shotaro
subjects:
  • Vortex-induced vibration
  • Wake oscillator model
  • Riser pipe
  • Hydrodynamic force
  • Lock-in
ispartof: Journal of Marine Science and Technology, 2009, Vol.14(3), pp.285-295
description: Vortex-induced vibrations of a rigid circular cylinder were studied by constructing a theory based on a wake oscillator model under quasisteady approximations, thereby evaluating vortex-induced hydrodynamic forces acting on the cylinder. A lock-in limit line representing the boundary for the occurrence of frequency lock-in was also theoretically derived. Hydrodynamic forces in forced oscillation problems estimated by the theory were compared with measured ones. Although some discrepancies were found, particularly in cases with high-frequency oscillations, good agreement was achieved in most cases. Accordingly, we conclude that the present theory captures well real phenomena in the wake downstream of a cylinder subjected to a flow.
language: eng
source:
identifier: ISSN: 0948-4280 ; E-ISSN: 1437-8213 ; DOI: 10.1007/s00773-008-0036-z
fulltext: fulltext
issn:
  • 1437-8213
  • 14378213
  • 0948-4280
  • 09484280
url: Link


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subjectVortex-induced vibration ; Wake oscillator model ; Riser pipe ; Hydrodynamic force ; Lock-in
descriptionVortex-induced vibrations of a rigid circular cylinder were studied by constructing a theory based on a wake oscillator model under quasisteady approximations, thereby evaluating vortex-induced hydrodynamic forces acting on the cylinder. A lock-in limit line representing the boundary for the occurrence of frequency lock-in was also theoretically derived. Hydrodynamic forces in forced oscillation problems estimated by the theory were compared with measured ones. Although some discrepancies were found, particularly in cases with high-frequency oscillations, good agreement was achieved in most cases. Accordingly, we conclude that the present theory captures well real phenomena in the wake downstream of a cylinder subjected to a flow.
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titleQuasisteady theory for the hydrodynamic forces on a circular cylinder undergoing vortex-induced vibration
descriptionVortex-induced vibrations of a rigid circular cylinder were studied by constructing a theory based on a wake oscillator model under quasisteady approximations, thereby evaluating vortex-induced hydrodynamic forces acting on the cylinder. A lock-in limit line representing the boundary for the occurrence of frequency lock-in was also theoretically derived. Hydrodynamic forces in forced oscillation problems estimated by the theory were compared with measured ones. Although some discrepancies were found, particularly in cases with high-frequency oscillations, good agreement was achieved in most cases. Accordingly, we conclude that the present theory captures well real phenomena in the wake downstream of a cylinder subjected to a flow.
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abstractVortex-induced vibrations of a rigid circular cylinder were studied by constructing a theory based on a wake oscillator model under quasisteady approximations, thereby evaluating vortex-induced hydrodynamic forces acting on the cylinder. A lock-in limit line representing the boundary for the occurrence of frequency lock-in was also theoretically derived. Hydrodynamic forces in forced oscillation problems estimated by the theory were compared with measured ones. Although some discrepancies were found, particularly in cases with high-frequency oscillations, good agreement was achieved in most cases. Accordingly, we conclude that the present theory captures well real phenomena in the wake downstream of a cylinder subjected to a flow.
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doi10.1007/s00773-008-0036-z
pages285-295
date2009-09