European Turbulence Conference 2015

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11:45
15 mins

Experiments on the interaction between hydrodynamic turbulence and free-surface waves
Timothée Jamin, Michael Berhanu, Eric Falcon

Session: Wall-bounded flows 3
Session starts: Wednesday 26 August, 10:30
Presentation starts: 11:45
Room: Room I

Timothée Jamin (Laboratoire Matière et Systèmes Complexes (MSC), Université Paris Diderot, CNRS, Paris, France)
Michael Berhanu (Laboratoire Matière et Systèmes Complexes (MSC), Université Paris Diderot, CNRS, Paris, France)
Eric Falcon (Laboratoire Matière et Systèmes Complexes (MSC), Université Paris Diderot, CNRS, Paris, France)

Abstract:
We investigate interaction between hydrodynamic turbulence and a free surface in a meter scale basin. An intense, homogeneous and isotropic turbulence is generated by an 8x8 array of jets pointing upwards at the bottom of the basin. We study free-surface deformations induced by hydrodynamic turbulence. In a second stage, we will study the mutual interaction between hydrodynamic turbulence and waves generated by an electromechanical shaker at the free surface: attenuation or amplification of free-surface waves by hydrodynamic turbulence and energy exchange in particular between hydrodynamic turbulence and wave turbulence.