Oblique Wave Trapping by Porous Structures Near a Wall
Publication: Journal of Engineering Mechanics
Volume 141, Issue 3
Abstract
The current study deals with the oblique wave trapping by bottom-standing and surface-piercing porous structures of finite width placed at a finite distance from a vertical rigid wall. Using the Sollitt and Cross model for wave motion within the porous structure, the problems are analyzed based on the small-amplitude water wave theory in water of finite depth. The solutions of the associated boundary value problems are obtained analytically using the eigenfunction expansion method and numerically using a multidomain boundary-element method. In the boundary-element method, the boundary value problems are converted into integral equations over the physical boundaries. The physical boundaries are discretized into a finite number of elements to obtain a system of linear algebraic equations. Various aspects of structural configurations, in trapping surface gravity waves, are analyzed from the computed results on the reflection coefficients and the hydrodynamic forces. Suitable arrangements of the rigid wall and partial porous structure of specific configurations can provide long-term and cost-effective solutions for protecting various marine facilities from wave attack.
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Acknowledgments
S. Koley acknowledges support received as a junior research fellow from the Council of Scientific and Industrial Research, New Delhi. H. Behera gratefully acknowledges the financial support received from the Ministry of Earth Sciences, Government of India, to pursue this research work.
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Published In
Journal of Engineering Mechanics
Volume 141 • Issue 3 • March 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Sep 14, 2013
Accepted: Jul 3, 2014
Published online: Jul 31, 2014
Published in print: Mar 1, 2015
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