Abstract
A novel iterative analytical solution is developed to study the oblique wave interaction with a horizontally submerged perforated plate near a partially reflecting vertical wall. The boundary condition on the perforated plate is considered as a quadratic pressure drop to incorporate the effect of wave height on the wave energy dissipation. The boundary value problem is analyzed analytically under the assumptions of small amplitude wave theory. To validate the analytical model, an iterative solution based on MBEM (multi-domain boundary element method) is independently developed, and the comparison between the analytical solution and the experimental data are given. The performance characteristics of a submerged perforated plate before a partially reflecting vertical wall is studied by analyzing the hydrodynamic coefficients of the system for the effects of plate porosity, relative plate width, spacing, depth of submergence, and the direction of wave attack. The proposed model is expected to act as an effective breakwater in the attenuation of wave energy for the creation of a tranquillity zone in the marine environment. Moreover, the analytical model developed in the present study can be effective and reliable for practical preliminary design.
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Abbreviations
- \(h\) :
-
Water depth
- \(h_{1}\) :
-
Depth of submergence of perforated plate
- \(h_{2}\) :
-
Space between the plate and the seabed
- B :
-
Horizontal projected length of the plate
- D :
-
Space between the perforated plate and the vertical wall
- H :
-
Incident wave height
- \(\omega\) :
-
Incident wave frequency
- \(k_{0}\) :
-
Incident wave number
- \(K_{R}\) :
-
Reflection coefficient
- \(C_{R}\) :
-
Reflection coefficient of the vertical wall
- \(\mu\) :
-
Plate porosity
- \(\alpha\) :
-
Discharge coefficient
- C :
-
Blockage coefficient
- b :
-
Plate thickness
- \(G\) :
-
Greens function
- \({{\partial G} \mathord{\left/ {\vphantom {{\partial G} {\partial n}}} \right. \kern-\nulldelimiterspace} {\partial n}}\) :
-
Directional derivative of greens function
- \(\Gamma\) :
-
Boundary of the computation domain
- \(r\) :
-
Distance between source and field point
- \(\lambda\) :
-
Wavelength
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Acknowledgements
This study was partially supported by the National Natural Science Foundation of China (No. 51725903). SN acknowledges the Kuwait Institute for Scientific Research for the facilities to work on this research paper.
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Zhao, Y., Vijay, K.G., Neelamani, S. et al. Analytical study for oblique wave interaction with a submerged horizontal perforated plate near a partially reflecting vertical wall. Meccanica 56, 1751–1770 (2021). https://doi.org/10.1007/s11012-021-01339-x
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DOI: https://doi.org/10.1007/s11012-021-01339-x