Acoustic streaming in a microfluidic channel with a reflector: Case of a standing wave generated by two counterpropagating leaky surface waves

Alexander A. Doinikov, Pierre Thibault, and Philippe Marmottant
Phys. Rev. E 96, 013101 – Published 5 July 2017

Abstract

A theory is developed for the modeling of acoustic streaming in a microfluidic channel confined between an elastic solid wall and a rigid reflector. A situation is studied where the acoustic streaming is produced by two leaky surface waves that propagate towards each other in the solid wall and thus form a combined standing wave in the fluid. Full analytical solutions are found for both the linear acoustic field and the field of the acoustic streaming. A dispersion equation is derived that allows one to calculate the wave speed in the system under study. The obtained solutions are used to consider particular numerical examples and to reveal the structure of the acoustic streaming. It is shown that two systems of vortices are established along the boundaries of the microfluidic channel.

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  • Received 4 April 2017

DOI:https://doi.org/10.1103/PhysRevE.96.013101

©2017 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
Fluid Dynamics

Authors & Affiliations

Alexander A. Doinikov, Pierre Thibault, and Philippe Marmottant

  • LIPhy, UMR 5588, CNRS/Université Grenoble-Alpes, Grenoble F-38401, France

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Issue

Vol. 96, Iss. 1 — July 2017

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