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Thermo-elastic multiple scattering in random dispersions of spherical scatterers

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journal contribution
posted on 24.11.2014, 13:30 by Valerie Pinfield
Ultrasonic monitoring of concentrated suspensions and emulsions is limited in concentration range due to the inaccuracy of the multiple scattering models currently used to interpret measurements. This paper presents the development of a model for the additional multiple scattering caused by mode conversion to/from thermal waves. These effects are believed to cause significant deviation from established models for emulsions at high concentration, or small particle size, at low frequency. The relevant additional scattering coefficients (transition factors) are developed, in numerical and analytical form, together with the modification to the effective wavenumber. Calculations have been carried out for a bromohexadecane-in-water emulsion to demonstrate the frequency-dependence of the scattering coefficients, and the effective speed and attenuation.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

Journal of the Acoustical Society of America

Volume

in press

Pages

? - ?

Citation

PINFIELD, V.J., 2014. Thermo-elastic multiple scattering in random dispersions of spherical scatterers. Journal of the Acoustical Society of America, 136 (6), 3008.

Publisher

© Acoustical Society of America

Version

VoR (Version of Record)

Publication date

2014

Notes

Copyright 2014 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in the Journal of the Acoustical Society of America, 136 (6), 3008 and may be found at: http://scitation.aip.org/content/asa/journal/jasa/136/6/10.1121/1.4900566?aemail=author

ISSN

0001-4966

Language

en

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Keywords

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