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Experimental observation of a near-motion-trapped mode: free motion in heave with negligible radiation

Abstract:

A simple geometry which exhibits near-motion-trapping is tested experimentally, along with perturbed versions of the structure. The motion of the freely floating structure and the surrounding wave field is tracked and the near-motion-trapped mode is found, characterised by a slowly decaying heave motion with very small linear radiation of energy. It is found that the latter property is a better discriminator of the perturbed geometries as viscous damping masks fine differences in radiation da...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1017/jfm.2015.669

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Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
Publisher:
Cambridge University Press
Journal:
Journal of Fluid Mechanics More from this journal
Volume:
786
Pages:
R51-R511
Publication date:
2016-01-01
Acceptance date:
2015-11-08
DOI:
EISSN:
1469-7645
ISSN:
0022-1120
Keywords:
Pubs id:
pubs:580757
UUID:
uuid:fd2d2c7f-6720-436a-bb6f-2ccc1950cf0c
Local pid:
pubs:580757
Source identifiers:
580757
Deposit date:
2016-03-08

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