Attenuation of Sound in Suspensions and Emulsions: Theory and Experiments

• J. R. Allegra

  Jefferson Physical Laboratory, Harvard University, Cambridge, Massachusetts 02138

• S. A. Hawley

  Jefferson Physical Laboratory, Harvard University, Cambridge, Massachusetts 02138

抄録

The absorption of sound in emulsions and suspensions is due to viscous and thermal transport processes occurring at the interface of the nonhomogeneities, as well as to the intrinsic absorption in the materials comprising the system. A complete description of these processes for systems of fluid particles suspended in fluid media was given by Epstein and Carhart [J. Acoust. Soc. Amer. 25, 553 (1953)]. However, subsequent investigators of liquid systems have generally neglected the thermal transport process. We show in this work that the Epstein-Carhart results provide a good description of our experimental attenuation data in emulsions, and that the thermal transport process can be the major factor in the attenuation. We have here also extended the theory further to include the attenuation in suspensions of solid particles, and good agreement is found between our theory and experimental results for aqueous suspensions of polystyrene spheres.

収録刊行物

• The Journal of the Acoustical Society of America

  The Journal of the Acoustical Society of America 51 (5B), 1545-1564, 1972-05-01

  Acoustical Society of America (ASA)

キーワード

• Acoustics and Ultrasonics
• Arts and Humanities (miscellaneous)

詳細情報

• CRID: 1360011144033581696
• NII論文ID: 30016073254
• DOI: 10.1121/1.1912999
• ISSN: 15208524
• ISSN: 00014966
• Web Site: https://pubs.aip.org/asa/jasa/article-pdf/51/5B/1545/18774660/1545_1_online.pdf
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