Acoustic Streaming and Its Suppression in Inhomogeneous Fluids

Research output: Research - peer-reviewJournal article – Annual report year: 2018

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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.
Original languageEnglish
Article number054501
JournalPhysical Review Letters
Volume120
Issue number5
Number of pages6
ISSN0031-9007
DOIs
StatePublished - 2018

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© 2018 American Physical Society

CitationsWeb of Science® Times Cited: 3

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