Surface Waves on Veritcally Sheared Currents
نویسنده
چکیده
A new perturbation analysis is presented which provides a first approximation to the wave-current interaction. The model is shown to provide a good description of laboratory data provided by Swan, Cummins & James (2000) and of results from a numerical formulation. These comparisons confirm that the near-surface vorticity leads to an important modification of the dispersion relation. The results also suggest that the vorticity leads to an important modification of the dispersion relation. The results also suggest that the vorticity distribution may lead to a significant change in the water-surface profile, with an associated increase in both the maximum water-particle accelerations and the maximum horizontal water-particle velocities. Comparisons with constantvorticity solutions also suggest that it is important to model the entire vertical distribution of the current.
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