Acoustic radiation force exerted on a small spheroidal rigid particle by a beam of arbitrary wavefront: Examples of traveling and standing plane waves

Silva, G.T. and Drinkwater, B.W., (2018), Acoustic radiation force exerted on a small spheroidal rigid particle by a beam of arbitrary wavefront: Examples of traveling and standing plane waves, The Journal of the Acoustical Society of America 144, EL453-EL459.

http://doi.org/10.1121/1.5080529

Abstract

The analytical solution of the acoustic radiation force exerted
by a beam of arbitrary shape on a small spheroidal rigid particle suspended in an ideal fluid is presented. The particle is assumed to be much
smaller than the wavelength, i.e., the so-called long-wavelength approximation. Based on this theoretical development, closed-form expressions
for the radiation force of a traveling and standing plane wave exerted on
a prolate spheroidal particle are derived in the dipole approximation. As
validation, the previous analytical result considering a standing wave
interacting with a spheroid in axisymmetric configuration is recovered, as
well as numerical results obtained with the boundary-element method.

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