The acoustic radiation force on a spherical thermoviscous particle in a thermoviscous fluid including scattering and microstreaming

Abstract

We derive general analytical expressions for the time-averaged acoustic radiation force on a small spherical particle suspended in a fluid and located in an axisymmetric incident acoustic wave. We treat the cases of the particle being either an elastic solid or a fluid particle. The effects of particle vibrations, acoustic scattering, acoustic microstreaming, heat conduction, and temperature-dependent fluid viscosity are all included in the theory. Acoustic streaming inside the particle is also taken into account for the case of a fluid particle. No restrictions are placed on the widths of the viscous and thermal boundary layers relative to the particle radius. We compare the resulting acoustic radiation force with that obtained from previous theories in the literature, and we identify limits, where the theories agree, and specific cases of particle and fluid materials, where qualitative or significant quantitative deviations between the theories arise.

29 pages, 4 pdf figures, RevTex 4.2

References in corpus (3)

• Visco-elastic drag forces and crossover from no-slip to slip boundary conditions for flow near air-water interfaces
• Theory of pressure acoustics with thermoviscous boundary layers and streaming in elastic cavities
• Fast microscale acoustic streaming driven by a temperature-gradient-induced non-dissipative acoustic body force

Cited by in corpus (1)

• Acoustic radiation force on a heated spherical particle in a fluid including scattering and microstreaming from a standing ultrasound wave