Abstract
In this paper we study the physical processes of regular wave trains impacting on a perforated breakwater. The breakwater consists of an array of vertical rectangular columns and a backwall. We have performed numerical simulations in which reflection coefficients have been calculated based on the Mansard and Funke (1980) theory and compared with laboratory data and analytical solutions (Kakuno et al. 1992, Kakuno & Liu, 1993). The numerical solutions will be further analyzed to describe the hydrodynamic processes, identify the limitations of the analytical theory and the scale effects in the laboratory experiments.
Highlights
In this paper we study the physical processes of regular wave trains impacting on a perforated breakwater
NUMERICAL EXPERIMENTS The numerical simulations have been performed with an enhanced version of the 3D Reynolds-Averaged NavierStokes numerical model based on the OpenFOAM library presented in Higuera et al (2013)
Results demonstrate an excellent agreement with the first order analytical solution and laboratory experiments presented in Kakuno et al (1992), both at laboratory scale and prototype scale (LS and PS, on)
Summary
In this paper we study the physical processes of regular wave trains impacting on a perforated breakwater. Each of the cases has been simulated for 20-40 wave periods, until the quasi-steady state has been reached. PREVIOUS STUDIES Kakuno et al (1992) and Kakuno & Liu (1993) provide an analytical solution for reflection coefficient, based on the potential flow theory and matched asymptotic expansions, for the perforated breakwater configuration sketched in figure 1.
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