Low mass ratio vortex-induced motion

Stappenbelt, B., Lalji, F. and Tan, G. (2007). Low mass ratio vortex-induced motion. In: Peter Jacobs, Tim McIntyre, Matthew Cleary, David Buttsworth, David Mee, Rose Clements, Richard Morgan and Charles Lemckert, 16th Australasian Fluid Mechanics Conference (AFMC). , Gold Coast, Queensland, Australia, (1491-1497). 3-7 December, 2007.

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Author Stappenbelt, B.
Lalji, F.
Tan, G.
Title of paper Low mass ratio vortex-induced motion
Conference location Gold Coast, Queensland, Australia
Conference dates 3-7 December, 2007
Proceedings title 16th Australasian Fluid Mechanics Conference (AFMC)
Place of Publication Brisbane, Australia
Publisher School of Engineering, The University of Queensland
Publication Year 2007
Year available 2007
Sub-type Fully published paper
ISBN 978-1-864998-94-8
Editor Peter Jacobs
Tim McIntyre
Matthew Cleary
David Buttsworth
David Mee
Rose Clements
Richard Morgan
Charles Lemckert
Start page 1491
End page 1497
Total pages 7
Collection year 2007
Language eng
Abstract/Summary The vortex-induced motion of floating structures is strongly influenced by their low mass ratios (i.e. the ratio of structural to displaced fluid mass). It has previously been demonstrated that the super-upper response branch encountered in two-degree of freedom systems at low mass ratio is characterised by much larger vibration amplitudes than those of the corresponding upper response branch. These low mass ratio super-upper response branch vibrations are clearly of immense importance in the design and analysis of offshore structures. It was the purpose of the current study to experimentally investigate the vortex-induced response of cylindrical structures at low mass ratio with particular emphasis on the relative magnitude of the super-upper response branch vibration amplitudes. The experimental apparatus utilised, consisted of a parallel linkage mechanism allowing translation motion of the cylindrical test section in both the inline and transverse directions. The configuration employed ensured identical mass ratios and natural frequencies in both directions. The mass ratio range covered was nominally 2.4 to 13.
Subjects 290501 Mechanical Engineering
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Conference Paper
Collection: 16th Australasian Fluid Mechanics Conference
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Created: Thu, 20 Dec 2007, 09:30:36 EST by Laura McTaggart on behalf of School of Engineering