Contribution of the acoustic-wake effect to the attenuation of sound in dilute suspensions of rigid particles

Author

Gonzalez, Ivan ; Gallego-Juárez, Juan A.

Author_Institution

Inst. de Acustica, CSIC, Madrid, Spain

Volume

50

Issue

3

fYear

2003

fDate

3/1/2003 12:00:00 AM

Firstpage

334

Lastpage

338

Abstract

This work deals with the attenuation of sound in dilute suspensions of rigid particles when the hydrodynamic mechanism of the acoustic-wake effect is considered. The study extends a previous model by considering asymmetric flow-field conditions around the particles, caused by other neighbor particles along the direction of propagation of the acoustic field. The attenuation coefficient is derived from the force equation for a spherical particle in an incompressible fluid that is oscillating at low frequencies and amplitudes within the range of Reynolds numbers of 0.1\n\n\t\t

Keywords

acoustic field; acoustic wave absorption; hydrodynamics; particle size; suspensions; wakes; Reynolds numbers; acoustic field; acoustic-wake effect; asymmetric flow-field conditions; attenuation coefficient; dilute suspensions; direction of propagation; force equation; hydrodynamic mechanism; incompressible fluid; particle size; rigid particles; sound attenuation; spherical particle; Absorption; Acoustic propagation; Acoustic waves; Aerosols; Attenuation; Councils; Equations; Frequency; Hydrodynamics; Suspensions;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2003.1193627

Filename

1193627