Article Dans Une Revue Physical Review E : Statistical, Nonlinear, and Soft Matter Physics [2001-2015] Année : 2014

Cyclones and attractive streaming generated by acoustical vortices

Résumé

Acoustical and optical vortices have attracted great interest due to their ability to capture and manipulate particles with the use of radiation pressure. Here we show that acoustical vortices can also induce axial vortical flow reminiscent of cyclones, whose topology can be controlled by adjusting the properties of the acoustical beam. In confined geometry, the phase singularity enables generating "attractive streaming" with the flow directed toward the transducer. This opens perspectives for contactless vortical flow control.

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hal-01056959 , version 1 (11-07-2022)

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Antoine Riaud, Michael Baudoin, Jean-Louis Thomas, Olivier Bou Matar. Cyclones and attractive streaming generated by acoustical vortices. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics [2001-2015], 2014, 90, 013008, 8 p. ⟨10.1103/PhysRevE.90.013008⟩. ⟨hal-01056959⟩
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