Two-dimensional numerical simulations of nonlinear acoustic streaming in standing waves [PDF]
, 2013 Numerical simulations of compressible Navier–Stokes equations in closed two-dimensional channels are performed. A plane standing wave is excited inside the channel and the associated acoustic streaming is investigated for high intensity waves, in the ...
BALTEAN-CARLÈS, Diana +4 more
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Ultrasound-induced acoustophoretic motion of microparticles in three dimensions [PDF]
, 2013 We derive analytical expressions for the three-dimensional (3D) acoustophoretic motion of spherical microparticles in rectangular microchannels. The motion is generated by the acoustic radiation force and the acoustic streaming-induced drag force.
Augustsson, Per, +9 more
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Degeneration of flow pattern in acousto-elastic flow through sharp-edge microchannels
Ultrasonics Sonochemistry, 2023 Acoustic streaming (AS) is the steady time-averaged flow generated by acoustic field, which has been widely used in enhancing mixing and particle manipulation.
Yuwen Lu +4 more
doaj +1 more source
Theory of pressure acoustics with boundary layers and streaming in curved elastic cavities [PDF]
, 2018 The acoustic fields and streaming in a confined fluid depend strongly on the acoustic boundary layer forming near the wall. The width of this layer is typically much smaller than the bulk length scale set by the geometry or the acoustic wavelength, which
Henrik Bruus +6 more
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Acoustic streaming and its suppression in inhomogeneous fluids [PDF]
, 2017 We present a theoretical and experimental study of boundary-driven acoustic streaming in an inhomogeneous fluid with variations in density and compressibility.
Augustsson, Per +3 more
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Three dimensional acoustic tweezers with acoustic vortex streaming [PDF]
, 2021 Abstract Acoustic tweezers use ultrasound for contact-free manipulation of particles from millimeter to sub-micrometer scale. Particle trapping originated in either radiation forces or acoustic streaming fields. Acoustic tweezers based on single-beam focused acoustic vortices have attracted considerable attention due to their selective trapping
Junfei Li +6 more
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Micromachines, 2019 Two-dimensional acoustofluidic fields in an ultrasonic chamber actuated by segmented ring-shaped vibration sources with different excitation phases are simulated by COMSOL Multiphysics.
Qiang Tang +3 more
doaj +1 more source
Acoustic resonances in microfluidic chips: full-image micro-PIV experiments and numerical simulations [PDF]
, 2006 We show that full-image micro-PIV analysis in combination with images of transient particle motion is a powerful tool for experimental studies of acoustic radiation forces and acoustic streaming in microfluidic chambers under piezo-actuation in the MHz ...
Abbott +32 more
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Concentration of Microparticles Using Flexural Acoustic Wave in Sessile Droplets
Sensors, 2022 Acoustic manipulation of microparticles and cells has attracted growing interest in biomedical applications. In particular, the use of acoustic waves to concentrate particles plays an important role in enhancing the detection process by biosensors. Here,
Tao Peng +3 more
doaj +1 more source
Acoustofluidics 17: theory and applications of surface acoustic wave devices for particle manipulation [PDF]
, 2012 In this paper, number 17 of the thematic tutorial series “Acoustofluidics – exploiting ultrasonic standing waves, forces and acoustic streaming in microfluidic systems for cell and particle manipulation” – we present the theory of surface acoustic waves (
Gedge, Michael, Hill, Martyn
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