Numerical Simulation of Acoustic Resonance and Streaming in Droplet Acoustofluidics

2017/03/23 by Fabio Garofalo, Garofalo, Fabio
Engineering · #Electrowetting and Microfluidic Technologies #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Microfluidic and Bio-sensing Technologies #Microfluidic and Capillary Electrophoresis Applications

paper · pdf · doi:10.48550/arxiv.1703.08059

openalex publication_date 2017/03/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

This paper reports the phenomenon of resonance weakening and streaming onset in two phase acoustofluidics by performing numerical simulations of a capillary droplet suspended in a microfluidic chamber. The simulations show that depending on the relative acoustic properties of the two phases, it is possible to observe (i)~the decrease in the total acoustic energy as the oscillation amplitude at the wall increases, and (ii)~the onset of acoustic streaming. The impact of these findings in terms of acoustic focusing inside droplets is also discussed.

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