A novel concept for reducing wave reflection from OWC structures with application of harbor agitation mitigation/coastal protection: Theoretical investigations

Oscillating water column (OWC) device has the potential application in field of harbor agitation mitigation/coastal protection. In this paper, we present a theoretical study on hydrodynamic performance novel coastal structure, which combines conventional harbor/coast-based single-chamber OWC and surface-piercing perforated barrier. Based linear flow theory, semi-analytical model for wave interaction with structure is developed. The influence geometrical/physical parameters characteristics revealed. results show that, by implementing barrier, remarkable reduction reflection from can be achieved, without compromise efficiency. incident energy absorbed low frequency region dissipated wall high region. Comparisons proposed indicate that bandwidth effective attenuation broadened. addition, location identified as key parameter influencing structure.