TY - JOUR

T1 - Acoustic radiation force exerted on a small spheroidal rigid particle by a beam of arbitrary wavefront

T2 - Examples of traveling and standing plane waves

AU - Silva, Glauber

AU - Drinkwater, Bruce

PY - 2018/11

Y1 - 2018/11

N2 - 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.

AB - 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.

U2 - 10.1121/1.5080529

DO - 10.1121/1.5080529

M3 - Article (Academic Journal)

C2 - 30522303

VL - 144

JO - Journal of the Acoustical Society of America

JF - Journal of the Acoustical Society of America

SN - 0001-4966

IS - 5

M1 - EL453

ER -