|Table of Contents|

Citation:
　K. R. Athul Krishna,Khansa Abdulla,D. Karmakar.Wave Energy Damping due to Coupled Porous Structure and Submerged Porous Plate[J].Journal of Marine Science and Application,2023,(3):456-474.[doi:10.1007/s11804-023-00346-6]
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Wave Energy Damping due to Coupled Porous Structure and Submerged Porous Plate

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Title:
Wave Energy Damping due to Coupled Porous Structure and Submerged Porous Plate
Author(s):
K. R. Athul Krishna;  Khansa Abdulla;  D. Karmakar
Affilations:
Author(s):
K. R. Athul Krishna;  Khansa Abdulla;  D. Karmakar
Department of Water Resources and Ocean Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore 575025, India
Keywords:
Fully-extended porous structure; Wave transmission; Energy dissipation; Porosity; Submerged horizontal porous plate
分类号:
-
DOI:
10.1007/s11804-023-00346-6
Abstract:
The present study investigates the wave-damping characteristics due to the combination of bottom-standing porous structure, submerged porous plate, and fully-extended porous structure of finite width using the small amplitude wave theory. The hydrodynamic characteristics such as reflection, transmission, and dissipation coefficients are determined to analyse the wave energy dissipation by the composite breakwater using the matched eigenfunction expansion method and orthogonal mode-coupling relation. Darcy’s law is incorporated to the flow through porous media. The composite breakwater system is investigated experimentally to validate and compare the numerical results with the physical model study. The complex porous effect parameter for the submerged plate is incorporated in the numerical analysis, which represents the reactance and resistance of the porous structure. The wave forces on the submerged plate and porous structure for the composite breakwater are investigated by considering the effects of changing parameters such as structural porosity, plate submergence, angle of incidence, width of the submerged porous structure and distance between the structures. The study illustrates that the increasing width of the fully-extended porous structure improves the performance of the breakwater system. The proposed study on the composite breakwater yields an useful information for wave energy attenuation, which can be designed and implemented in coastal and harbour areas to achieve wave tranquillity.

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Memo

Memo:
Received date:2022-9-7;Accepted date:2023-1-8。
Foundation item:The authors acknowledge Science and Engineering Research Board (SERB), Department of Science & Technology (DST), Government of India for supporting financially under the research Grant No. CRG/2018/004184 and Ministry of Ports, Shipping and Waterways, Government of India through the research Grant No. DW/01013(13)/2/2021.
Corresponding author:D. Karmakar,E-mail:dkarmakar@nitk.edu.in
Last Update: 2023-10-10