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

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

2012-03-13

arxiv.org/abs/1203.2903v1

Physics

Fluid Dynamics

Scientific paper

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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