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Generation of a square flow by acoustic streaming
1 : Laboratoire de Mécanique des Fluides et d'Acoustique
(LMFA)
-
Site web
CNRS : UMR5509
École Centrale de Lyon/Université Lyon 1/INSA de Lyon, ECL, 36 avenue Guy de Collongue, 69134 Ecully Cedex, France -
France
Experimental and numerical investigations of acoustic streaming in water are described, with the objectives of using it as an efficient tool for mixing. The acoustic beam is produced by an ultrasonic transducer. This beam enters a square cavity at mid-height through a window, reflects successively on the other walls and leaves the cavity through the same window. The acoustic force existing inside these beams generates four jets, which drive a square flow inside the cavity. The properties of this square flow are described and the evolution of its dynamics, when the acoustic intensity is increased, is studied.
