Analytical Study on Drift of Small Floating Objects under Regular Waves
Publication: Journal of Engineering Mechanics
Volume 142, Issue 6
Abstract
An improved analytical derivation was present on the drift motion of small rigid floating objects of arbitrary shapes under regular surface waves. The approach follows the slope-sliding model but with two new developments: (1) the incorporation of the Lagrangian movement of the small floating object in the wave motion including the heave motion, and (2) more detailed description of the associated hydrodynamic forces that are comprised of the gravitational force, pressure force, and viscous skin friction modeled by a drag coefficient. The analysis first yields the Stokes drift when the object is infinitely small, which is as physically expected. Subsequently, the predicted drift of a small floating circular plate is derived based on the assumption of nonseparated flows around the object. The comparison between the predicted wave-induced drift and previous experimental measurements shows satisfactory agreement with a set of tuned hydrodynamic coefficients that are consistent with previous related studies.
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Acknowledgments
The work is supported by the Ministry of Education, Singapore, through the AcRF Tier 2 Grant No. MOE2013-T2-2-054 and partially supported by National Natural Science Foundation of China through Grant No. 11272079. The authors would like to thank the anonymous reviewers for their valuable comments, which improved the quality of this manuscript.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 142 • Issue 6 • June 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jul 28, 2015
Accepted: Dec 4, 2015
Published online: Feb 26, 2016
Published in print: Jun 1, 2016
Discussion open until: Jul 26, 2016
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