Oblique wave scattering by double porous structures

The linear wave scattering by double submerged structures of different structural parameters in oblique sea is investigated by use of eigenfunction expansion method. The important hydrodynamical scattering quantities such as reflection, transmission and dissipation coefficients are obtained and analyzed to examine the effects of various wave and structural parameters. As a special case, the computational results are validated for their accuracy by comparing with known results in the literature in case of single structure. The study reveals that a significant amount of wave energy dissipated in case of double structures as compared to that in the presence of single structure. Moreover, the energy dissipation is found to be independent of relative spacing between the two structures.