New wave generation
Abstract
We present the results of a combined experimental and numerical study of the generation of internal waves using the novel internal wave generator design of Gostiaux et al. (2007). This mechanism, which involves a tunable source comprised of oscillating plates, has so far been used for a few fundamental studies of internal waves, but its full potential has yet to be realized. Our studies reveal that this approach is capable of producing a wide variety of two-dimensional wave fields, including plane waves, wave beams and discrete vertical modes in finite-depth stratifications. The effects of discretization by a finite number of plates, forcing amplitude and angle of propagation are investigated, and it is found that the method is remarkably efficient at generating a complete wave field despite forcing only one velocity component in a controllable manner. We furthermore find that the nature of the radiated wave field is well predicted using Fourier transforms of the spatial structure of the wave generator.
Keywords
Cite
@article{arxiv.1504.01489,
title = {New wave generation},
author = {Matthieu J. Mercier and Denis Martinand and Manikandan Mathur and Louis Gostiaux and Thomas Peacock and Thierry Dauxois},
journal= {arXiv preprint arXiv:1504.01489},
year = {2015}
}