NEARSHORE COMPOUND SIMULATION BY A BOUSSINESQ-TYPE WAVE MODEL

A two-dimensional, in the horizontal plane, high order Boussinesq-type model is presented to simulate wave propagation in the nearshore zone. The model is extended to the surf zone by applying a wave breaking module of the eddy viscosity type and to the swash zone by applying a modified narrow slot technique. Bottom friction and subgrid turbulent mixing are also incorporated. The numerical model relies on a generalized multi-step predictor-corrector scheme. Both the one-and two-dimensional model versions are verified with a number of experimental cases involving regular and irregular wave propagation in the nearshore. A comparison with a Smoothed Particle Hydrodynamics (SPH) model is also included. In general, the agreement is satisfactory and most of the nearshore phenomena are accurately reproduced.