Author(s): H. Ahmed; A. Schlenkhoff; D. B. Bung
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Keywords: Coastal structures; Permeable breakwater; Vertical slotted wall; Energy dissipation
Abstract: The present paper investigates the hydrodynamic performance characteristics of a vertical slotted wall, which is used as a breakwater to protect harbours and coastal areas. The breakwater model consists of a vertical slotted wall with an impermeable upper and lower part where the draft is a decimal multiple of the total depth. The middle part is permeable with a porosity of 50%. For regular waves, a numerical model has been developed using the Eigenfunction expansion method and the boundary condition at the breakwater with the objective to compute wave transmission, reflection and energy dissipation coefficients. Laboratory experiments are conducted for various values of structural parameters and wave periods. The numerical results are compared with experimental studies and found to be in good agreement.
Year: 2011