Acoustic Streaming and Its Suppression in Inhomogeneous Fluids

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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.

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • Technical University of Denmark
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Strömningsmekanik och akustik
Originalspråkengelska
Artikelnummer054501
TidskriftPhysical Review Letters
Volym120
Utgåva nummer5
StatusPublished - 2018 jan 30
PublikationskategoriForskning
Peer review utfördJa