Numerical and physical modelling of wave-current interaction in the nearshore environment.

The ability to predict wave current interaction correctly is of importance to coastal engineers. Considers the relative merits between an implicit and an explicit scheme for solving the combined mass and momentum equations which govern wave/current interaction. Data from a wave basin experiment are used to validate the numerical models. It is concluded that an alternating implicit directional implicit A.D.I. procedure has significant computational advantages, even though, in the form presented here, it smooths out jetting effects. In future, it is recommended that a k EPSILON model be used to replace the mixing terms in the momentum equations in the implicit scheme.