MODELLING POST-WAVE BREAKING TURBULENCE AND VORTICITY

T.C.D. Barnes, M. Brocchini, D.H. Peregrine, P.K. Stansby

Abstract


A brief review is given of the initial development of two approaches to the modelling of the flow that occurs after a water wave breaks. The first approach aims to model the turbulence generated by a spilling breaker riding on an unsteady wave. The turbulent volume of water in a spiller is modelled as a thin layer. The second approach is applied to model the region of strong vorticity generated by a plunging breaker. The vorticity is modelled using two-dimensional discrete vortices. The behaviour of both a single vortex and a 'cloud' of vortices near a free surface is described.

Keywords


vorticity; post-wave breaking; wave breaking; turbulence

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DOI: http://dx.doi.org/10.9753/icce.v25.%25p