Gravity wave interaction with a submerged wavy porous plate

A numerical model based on multi-domain boundary element method (BEM) is developed to study the gravity wave interaction with a horizontally submerged wavy porous plate. The boundary condition on the porous barrier is considered a quadratic pressure drop to incorporate the effect of wave height on t...

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Bibliographic Details
Published in:Ships and offshore structures 2020-12, Vol.15 (S1), p.S123-S133
Main Authors: Vijay, K. G., He, S. Y., Zhao, Y., Liu, Y., Sahoo, T.
Format: Article
Language:English
Subjects:
Boundary conditions
Boundary element method
Breakwaters
Coefficients
Energy dissipation
Energy exchange
Flat plates
Gravity waves
Horizontally submerged wavy porous plate
Hydrodynamic coefficients
Hydrodynamics
Marine environment
Mathematical models
multi-domain boundary element method
Numerical models
Physical properties
Porous plates
Pressure drop
quadratic pressure drop
Ripples
surface gravity waves
Water depth
Wave attenuation
Wave energy
Wave height
Wave interaction
Wave power
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Summary:A numerical model based on multi-domain boundary element method (BEM) is developed to study the gravity wave interaction with a horizontally submerged wavy porous plate. The boundary condition on the porous barrier is considered a quadratic pressure drop to incorporate the effect of wave height on the wave energy dissipation directly. The performance characteristics of the wavy porous plate are studied by analysing the hydrodynamic coefficients of the breakwater for different physical parameters. Numerical results demonstrate that wavy porous plate improves the energy dissipation and reduce wave transmission compared against the conventional flat plate. The increase in wave energy dissipation is governed by the ripple amplitude and the number of ripples. The proposed model is expected to act as an effective wave barrier in the attenuation of wave energy for the creation of a tranquillity zone in the marine environment for water depths ranging from intermediate to deep waters.
ISSN:1744-5302
1754-212X
DOI:10.1080/17445302.2020.1789034