Wave-current Coupled Hydrodynamic Responses to Artificial Island and Beach Nourishment Projects

Abstract:

Based on the beach nourishment project between the Yanghe Estuary and the Daihe Estuary, the numerical simulation method is adopted to study wave-current coupled hydrodynamic responses to artificial island and beach nourishment projects. It can be found that changes in tidal current caused by the combination of artificial island and beach nourishment projects are not linear superposition of differences induced by artificial island project and beach nourishment project respectively, however, the changes in wave field have a linear superposition relationship. Reserving tidal channel in beach nourishment project is necessary for good water exchange, which benefits alleviating its influence to surrounding environment. The findings can provide a reference for beach nourishment under similar conditions.

Key words:artificial island; beach nourishment project; tidal current; wave; hydrodynamic responses