Simulation using the limiting velocity approach of acoustic streaming establishment and aerosol particle focusing in complex-shaped acoustofluidic devices

摘要: Abstract In this study, we investigated the formation of acoustic fields and their influence on particle distribution in complex-shaped acoustofluidic devices by considering quadrupole hyperbolic resonator as a representative benchmark problem using an approach that can be applied to other geometries. The Navier–Stokes equations for gases were solved twice, with different boundary conditions each time. An based limiting velocity method was used simulate streaming focusing. effects phase shifts oscillations focusing patterns investigated. transient processes Rayleigh vortices distributions simulated at resonant mode. Zones drastically increased concentrations (acoustic traps) identified. results showed frequency, locations traps, form highly dependent oscillations.