Acoustic radiation force on a particle in a temperature gradient

  • P. Coilas
  • Published 2011


A general expression is derived for the acoustic radiation force on a small spherical particle of radius R in a standing wave field in a temperature gradient. The case of a particle inside a long tube chamber with a temperature gradient along the axis of symmetry is examined in more detail. The analysis is considerably simplified by the introduction of the mass flux density potential •. Assuming kR ,• 1, and neglecting convection, acoustic streaming, heat conduction, and viscosity effects, an expression is obtained for the force that consists of a "local" version of Gor'kov's result as well as correction terms of order fi/k, where fi• (l/T) (dT/dz).

Cite this paper

@inproceedings{Coilas2011AcousticRF, title={Acoustic radiation force on a particle in a temperature gradient}, author={P. Coilas}, year={2011} }