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Nonlinear waves with vorticity PDF Print E-mail

Inclusion of vorticity in Boussinesq models.

Many water wave problems can be solved with good accuracy using potential flow theory. This simplifies the computational work considerably. For water waves, the socalled Boussinesq type models have shown great success in accurately modelling highly nonlinear and dispersive wave motion, yet reducing the original 3D problem to a 2D one.

Most Boussinesq models, however, are derived under the assumption of potential flow. Hereby, the effect of a shear current cannot be modelled. Also, the production of vorticity in breaking waves is not modelled.

In this project with Per Madsen and Hemming Schäffer, vorticity effects are included into the class of highly accurate Boussinesq models, developed at DTU over the last decade.