A novel internal waves generator

Louis Gostiaux (1) , Henri Didelle (2) , Stéphane Mercier (2) , Thierry Dauxois (1)

1 Phys-ENS - Laboratoire de Physique de l'ENS Lyon
2 LEGI - Laboratoire des Écoulements Géophysiques et Industriels [Grenoble]

We present a new kind of generator of internal waves which has been designed for three purposes. First, the oscillating boundary conditions force the fluid particles to travel in the preferred direction of the wave ray, hence reducing the mixing due to forcing. Secondly, only one ray tube is produced so that all of the energy is in the beam of interest. Thirdly, temporal and spatial frequency studies emphasize the high quality for temporal and spatial monochromaticity of the emitted beam. The greatest strength of this technique is therefore the ability to produce a large monochromatic and unidirectional beam.

Mots clés: Internal waves; Stratified fluids

Domaines: Physique Atmosphérique et Océanique [physics.ao-ph]; Dynamique des Fluides [physics.flu-dyn]

Louis Gostiaux, Henri Didelle, Stéphane Mercier, Thierry Dauxois. A novel internal waves generator. Experiments in Fluids, 2007, 42 (1), pp.123-130. ⟨ensl-00102139⟩