Acoustically Driven Fluid and Particle Motion in Confined and Leaky Systems

Rune Barnkob, Nitesh Nama, Liqiang Ren, Tony Jun Huang, Francesco Costanzo, Christian J. Kähler

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

The acoustic motion of fluids and particles in confined and acoustically leaky systems is receiving increasing attention for its use in medicine and biotechnology. A number of contradicting physical and numerical models currently exist, but their validity is uncertain due to the unavailability of hard-to-access experimental data for validation. We provide experimental benchmarking data by measuring 3D particle trajectories and demonstrate that the particle trajectories can be described numerically without any fitting parameter by a reduced-fluid model with leaky impedance-wall conditions. The results reveal the hitherto unknown existence of a pseudo-standing wave that drives the acoustic streaming as well as the acoustic radiation force on suspended particles.

Original languageEnglish (US)
Article number014027
JournalPhysical Review Applied
Volume9
Issue number1
DOIs
StatePublished - Jan 25 2018

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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