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Acoustic Streaming and Its Suppression in Inhomogeneous Fluids

Karlsen, Jonas T.; Qiu, Wei LU ; Augustsson, Per LU and Bruus, Henrik (2018) In Physical Review Letters 120(5).
Abstract

We present a theoretical and experimental study of boundary-driven acoustic streaming in an inhomogeneous fluid with variations in density and compressibility. In a homogeneous fluid this streaming results from dissipation in the boundary layers (Rayleigh streaming). We show that in an inhomogeneous fluid, an additional nondissipative force density acts on the fluid to stabilize particular inhomogeneity configurations, which markedly alters and even suppresses the streaming flows. Our theoretical and numerical analysis of the phenomenon is supported by ultrasound experiments performed with inhomogeneous aqueous iodixanol solutions in a glass-silicon microchip.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
120
issue
5
publisher
American Physical Society
external identifiers
  • scopus:85041327073
ISSN
0031-9007
DOI
10.1103/PhysRevLett.120.054501
language
English
LU publication?
yes
id
8d0bdf03-9b78-4cf4-8ac3-6c804cea6a33
date added to LUP
2018-02-12 08:14:54
date last changed
2018-02-12 08:14:54
@article{8d0bdf03-9b78-4cf4-8ac3-6c804cea6a33,
  abstract     = {<p>We present a theoretical and experimental study of boundary-driven acoustic streaming in an inhomogeneous fluid with variations in density and compressibility. In a homogeneous fluid this streaming results from dissipation in the boundary layers (Rayleigh streaming). We show that in an inhomogeneous fluid, an additional nondissipative force density acts on the fluid to stabilize particular inhomogeneity configurations, which markedly alters and even suppresses the streaming flows. Our theoretical and numerical analysis of the phenomenon is supported by ultrasound experiments performed with inhomogeneous aqueous iodixanol solutions in a glass-silicon microchip.</p>},
  articleno    = {054501},
  author       = {Karlsen, Jonas T. and Qiu, Wei and Augustsson, Per and Bruus, Henrik},
  issn         = {0031-9007},
  language     = {eng},
  month        = {01},
  number       = {5},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Acoustic Streaming and Its Suppression in Inhomogeneous Fluids},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.120.054501},
  volume       = {120},
  year         = {2018},
}