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Surface wave scattering by a rectangular structure with two unequal thin plates
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DOI：10.1016/j.euromechflu.2026.204624.png)
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Abstract
En 中文
A fixed rectangular structure with two unequal thin plates protruding downward from the sides is considered in a free surface of water of finite depth to study wave scattering and the forces acting on it. The study is carried out by converting the boundary-value problem into a system of integral equations. A Galerkin method is employed to obtain a very accurate approximate solution of the integral equations. The findings indicate that the wider rectangular structure with unequal plates transmits less wave energy than either the equal-plate or single-plate structures. The structure with unequal plates experiences greater wave forces and overturning moments than those with equal plates and a single plate. However, increasing the structure width can mitigate wave forces and the resulting overturning moments. In addition, a comparison of the transmission coefficient with an empirical formula of heave motion reveals that the proposed structure in a fixed position transmits less incident wave energy. The fluid velocity is decreased when the unequal plates are interchanged. The findings help engineers estimate the wave-scattering performance of a new breakwater configuration integrating a rectangular structure and unequal thin plates.
Keywords:
Rectangular structure
Thin plates
Integral equation
Galerkin approximation
Reflection and transmission coefficients
Wave forces
Journal
E
IF:
2.5
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185
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