Modeling fast acoustic streaming: Steady-state and transient flow solutions.

  title={Modeling fast acoustic streaming: Steady-state and transient flow solutions.},
  author={Jason Orosco and James R. Friend},
  journal={Physical review. E},
  volume={106 4-2},
Traditionally, acoustic streaming is assumed to be a steady-state, relatively slow fluid response to passing acoustic waves. This assumption, the so-called slow streaming assumption, was made over a century ago by Lord Rayleigh. It produces a tractable asymptotic perturbation analysis from the nonlinear governing equations, separating the acoustic field from the acoustic streaming that it generates. Unfortunately, this assumption is often invalid in the modern microacoustofluidics context… 

Figures from this paper



Scaling and dimensional analysis of acoustic streaming jets

This paper focuses on acoustic streaming free jets. This is to say that progressive acoustic waves are used to generate a steady flow far from any wall. The derivation of the governing equations

Time evolution of acoustic streaming from a planar ultrasound source

Eckart‐type acoustic streaming induced in confined sound beams from a piston source is examined in water theoretically and experimentally. Axisymmetric flow equations with a spatially distributed

Large-amplitude acoustic streaming

Abstract A mechanism is proposed for the generation of large-amplitude acoustically-driven streaming flows in which time-mean flow speeds are comparable to the instantaneous speed of fluid particles

Streaming by leaky surface acoustic waves

  • J. VannesteO. Bühler
  • Physics
    Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2010
Acoustic streaming, the generation of mean flow by dissipating acoustic waves, provides a promising method for flow pumping in microfluidic devices. In recent years, several groups have been

Acoustic Streaming due to Attenuated Plane Waves

Theories for calculating steady streaming associated with sound fields are reviewed, comparing the methods and approximations of various authors. Two illustrative problems are worked out, both for

On the influence of viscosity and caustics on acoustic streaming in sessile droplets: an experimental and a numerical study with a cost-effective method

When an acoustic wave travels in a lossy medium such as a liquid, it progressively transfers its pseudo-momentum to the fluid, which results in a steady flow called acoustic streaming. This

Acoustic Streaming Generated by Sharp Edges: The Coupled Influences of Liquid Viscosity and Acoustic Frequency

Acoustic streaming can be generated around sharp structures, even when the acoustic wavelength is much larger than the vessel size. This sharp-edge streaming can be relatively intense, owing to the

Acoustic and streaming velocity components in a resonant waveguide at high acoustic levels.

The hypothesis of radial streaming velocity being of second order in a Mach number expansion, is not valid at high amplitudes, and two streaming flow regimes are pointed out, the axial streaming dependency on acoustics going from quadratic to linear.

Dynamics of a spherical particle in an acoustic field: A multiscale approach

A rigid spherical particle in an acoustic wave field oscillates at the wave period but has also a mean motion on a longer time scale. The dynamics of this mean motion is crucial for numerous

Experimental investigation of acoustic streaming in a cylindrical wave guide up to high streaming Reynolds numbers.

Results show that inner streaming vortices are less affected by this substantial evolution of fast streaming pattern, and measurements of the transient evolution of streaming velocity provide an additional insight into the evolution offast streaming.