A 3D Numerical Model of Nearshore Wave-Induced Currents Based on the Discontinuous Galerkin Method

Abstract

Based on the discontinuous Galerkin methods, the concept of three-dimensional radiation stress, surface roller and wave turbulent mixing effects were applied to develop the three-dimensional, unstructured grids numerical model for wave-induced currents. Validation of the model was carried out by comparing the model simulation with laboratory measurements for wave-induced currents over a slope, e.g. Undertow and long shore currents. The model results showed that the agreement between the simulated results and the laboratory measurements is generally good, the proposed model could be used to describe three-dimensional wave induced currents in near shore zone.