Analysis of oblique wave interaction with a submerged perforated semicircular breakwater

This study examines oblique wave interaction with a submerged perforated semicircular breakwater based on the linear potential theory. The fluid domain is divided into inner and outer regions by a perforated semicircular arc. The velocity potentials in the inner and outer regions are constructed by eigenfunction expansions and multipole expansions, respectively. The unknown constants in the velocity potentials are determined by matching the boundary conditions on the perforated arc. The convergence of the solution method we have developed is rapid. The reflection and transmission coefficients and the wave forces acting on the breakwater are calculated and examined. Some useful results are presented for practical engineering.