Article Dans Une Revue Physics of Fluids Année : 2012

Experimental observation of a strong mean flow induced by internal gravity waves

Résumé

We report the experimental observation of a robust horizontal mean flow induced by internal gravity waves. A wave beam is forced at the lateral boundary of a tank filled with a linearly stratified fluid initially at rest. After a transient regime, a strong jet appears in the wave beam, with horizontal recirculations outside the wave beam. We present a simple physical mechanism predicting the growth rate of the mean flow and its initial spatial structure. We find good agreement with experimental results.

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Dates et versions

hal-00678777 , version 1 (13-03-2012)
hal-00678777 , version 2 (30-06-2012)
hal-00678777 , version 3 (23-08-2012)

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Guilhem Bordes, Antoine Venaille, Sylvain Joubaud, Philippe Odier, Thierry Dauxois. Experimental observation of a strong mean flow induced by internal gravity waves. Physics of Fluids, 2012, 24 (8), pp.086602. ⟨10.1063/1.4745880⟩. ⟨hal-00678777v3⟩
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