Modeling Floating Object Entry and Exit Using Smoothed Particle Hydrodynamics
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 137, Issue 5
Abstract
This paper investigates fluid and floating object interaction using a novel adaptation of the weakly compressible smoothed particle hydrodynamics (WCSPH) method by incorporating a floating object model. In particular, this paper examines the water impact, hydrodynamic forces, fluid motions, and movement of objects in the conventional case studies of object entry and exit from still water. A two-dimensional wedge drop analysis was examined, and the hydrodynamic forces show acceptable agreement with published experimental and numerical results. The movement of the object is well predicted. The velocity field of the fluid domain is also captured. Simulations for water entry and exit of a buoyant and neutral density cylinder compares well with previous experimental, numerical, and empirical studies in penetration, free surface comparisons, and object movement. These results provide a good foundation to evaluate the accuracy and stability of WCSPH for modeling the interaction between free surface flow and free moving floating objects.
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Acknowledgments
The authors would like to acknowledge the support of the Flood Risk from Extreme Events (FREE) Program of the UK Natural Environment Research Council (NERC) (Grant No. UNSPECIFIEDNE/E002129/1) during this project. The authors would also like to acknowledge the support of the South West of England Regional Development Agency through Peninsular Research Institute for Marine Renewable Energy (http://www.primare.org).
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 137 • Issue 5 • September 2011
Pages: 213 - 224
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Jan 14, 2010
Accepted: Jan 7, 2011
Published online: Jan 10, 2011
Published in print: Sep 1, 2011
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