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 Santanu Koley,Trilochan Sahoo.Oblique Wave Trapping by Vertical Permeable Membrane Barriers Located near a Wall[J].Journal of Marine Science and Application,2017,(4):490-501.[doi:10.1007/s11804-017-1432-8]
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Oblique Wave Trapping by Vertical Permeable Membrane Barriers Located near a Wall


Oblique Wave Trapping by Vertical Permeable Membrane Barriers Located near a Wall
Santanu Koley1 Trilochan Sahoo2
Santanu Koley1 Trilochan Sahoo2
1. Dhirubhai Ambani Institute of Information and Communication Technology, Gandhinagar-382007, India;
2. Department of Ocean Engineering and Naval Architecture, Indian Institute of Technology, Kharagpur-721302, India
surface wavesflexible membraneporosityeigenfunction expansionleast squares approximation
The effectiveness of a vertical partial flexible porous membrane wave barrier located near a rigid vertical impermeable seawall for trapping obliquely incident surface gravity waves are analyzed in water of uniform depth under the assumption of linear water wave theory and small amplitude membrane barrier response. From the general formulation of the submerged membrane barrier, results for bottom-standing and surface-piercing barriers are computed and analyzed in special cases. Using the eigenfunction expansion method, the boundary-value problems are converted into series relations and then the required unknowns are obtained using the least squares approximation method. Various physical quantities of interests like reflection coefficient, wave energy dissipation, wave forces acting on the membrane barrier and the seawall are computed and analyzed for different values of the wave and structural parameters. The study will be useful in the design of the membrane wave barrier for the creation of tranquility zone in the lee side of the barrier to protect the seawall.


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Received date:2016-12-31;Accepted date:2017-06-04。
Foundation item:Supported by SERB-DST Grant (No. PDF/2016/001324)
Corresponding author:Trilochan Sahoo,Email:tsahoo1967@gmail.com
Last Update: 2017-12-02