The numerical simulation of nearshore current combined with the elliptic mild-slope equation

The nearshore current generated by the breaking of water waves when the waves propagate to the shore is one of the most important hydrodynamic factors in coastal zones.The wave and longshore current field have been numerically simulated based on the elliptic mild-slope equation and wave-current model.As the wave direction is hard to be defined due to the refraction, diffraction and reflection of waves in some local complicated regions,the wave radiation stresses have been calculated combining with the elliptic mild-slope equation which accounts for the refraction,diffraction and reflection of waves and in which the wave angles have not been involved,and the nearshore wave current field has been numerically simulated based on these,which has made the numerical model can be widely used in complicated coastal regions.