BREAKING WAVES AND INDUCED CURRENTS ON COASTAL STRUCTURES

Abstract

A horizontally two-dimensional, time dependent numerical model for obliquely incident shallow water waves with arbitrary incident angles is developed to predict the temporal and spatial variations of the free surface elevations and fluid velocities on inclined coastal structures. As a first attempt, use is made of periodic lateral boundary conditions, which limits the computations to regular waves on the slope of alongshore uniformity. The numerical method and the seaward and landward boundary algorithms are fairly general and expected to be applicable to irregular waves as well. The computed results for plunging waves on a rough 1:3.5 slope with the incident angles in the range of 0° — 80° are presented.