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Vortex-excited vibration of a circular cylinder in planar oscillating flow

Vortex-excited vibration of a circular cylinder in planar oscillating flow
Vortex-excited vibration of a circular cylinder in planar oscillating flow
Laboratory investigation has been made for a comprehensive study of the dynamic transverse response of a circular cylinder in planar oscillating flow. The test cylinder, 0.03 m in diameter and 0.48 m in length, is mounted horizontally at the mid-point of the water depth and is supported flexibly by a spring in the transverse direction. The variations of the transverse response of the test cylinder with frequency ratio fd/fnw (fd : frequency of oscillatory incident flow; fnw: natural frequency of the test cylinder in still water) and Keulegan-Carpenter number, KC, as the function of typical combined mass ratio-damping parameter, Scruton number Ksp, are obtained in the range of 4 < KC < 20 and 0 75 < Ksp < 14 5. The appearance of 2 types of peak in the amplitude of vortex-excited vibration, which occurs similarly in the vortex-excited vibration of a vertical circular cylinder in waves, is also recognized for the right value of typical Scruton number Ksp.
1053-5381
266-273
Hayashi, K.
950b290e-4fd2-4532-b31f-a37f24ef736b
Higaki, F.
fc2effca-9e58-4e49-9ebd-f0ee267ffd64
Shigemura, T.
227a6996-4a50-41ef-9168-a705c3ada604
Chaplin, J.R.
d5ed2ba9-df16-4a19-ab9d-32da7883309f
Hayashi, K.
950b290e-4fd2-4532-b31f-a37f24ef736b
Higaki, F.
fc2effca-9e58-4e49-9ebd-f0ee267ffd64
Shigemura, T.
227a6996-4a50-41ef-9168-a705c3ada604
Chaplin, J.R.
d5ed2ba9-df16-4a19-ab9d-32da7883309f

Hayashi, K., Higaki, F., Shigemura, T. and Chaplin, J.R. (2003) Vortex-excited vibration of a circular cylinder in planar oscillating flow. International Journal of Offshore and Polar Engineering, 13 (4), 266-273.

Record type: Article

Abstract

Laboratory investigation has been made for a comprehensive study of the dynamic transverse response of a circular cylinder in planar oscillating flow. The test cylinder, 0.03 m in diameter and 0.48 m in length, is mounted horizontally at the mid-point of the water depth and is supported flexibly by a spring in the transverse direction. The variations of the transverse response of the test cylinder with frequency ratio fd/fnw (fd : frequency of oscillatory incident flow; fnw: natural frequency of the test cylinder in still water) and Keulegan-Carpenter number, KC, as the function of typical combined mass ratio-damping parameter, Scruton number Ksp, are obtained in the range of 4 < KC < 20 and 0 75 < Ksp < 14 5. The appearance of 2 types of peak in the amplitude of vortex-excited vibration, which occurs similarly in the vortex-excited vibration of a vertical circular cylinder in waves, is also recognized for the right value of typical Scruton number Ksp.

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More information

Published date: December 2003
Venue - Dates: 12th International Offshore and Polar Engineering Conference, , Kitakyushu, Japan, 2002-05-26 - 2002-05-31

Identifiers

Local EPrints ID: 53802
URI: http://eprints.soton.ac.uk/id/eprint/53802
ISSN: 1053-5381
PURE UUID: c57c37a3-ac28-4a67-9883-0db796c6ec57
ORCID for J.R. Chaplin: ORCID iD orcid.org/0000-0003-2814-747X

Catalogue record

Date deposited: 22 Jul 2008
Last modified: 16 Mar 2024 03:13

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Contributors

Author: K. Hayashi
Author: F. Higaki
Author: T. Shigemura
Author: J.R. Chaplin ORCID iD

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