Journal article ยท Preprint article
Acoustic Streaming and Its Suppression in Inhomogeneous Fluids
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.
Language: | English |
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Year: | 2018 |
Pages: | 054501 |
ISSN: | 10797114 and 00319007 |
Types: | Journal article and Preprint article |
DOI: | 10.1103/PhysRevLett.120.054501 |
ORCIDs: | Karlsen, Jonas Tobias and Bruus, Henrik |