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The Absorption of Sound in Suspensions Due to the Acoustic Wake Effect

AuthorsGonzález Gómez, Icíar; Gallego Juárez, Juan Antonio
KeywordsSound absorption
Absorption coefficient
Acoustic Wake
Issue DateSep-2001
PublisherAcoustical Society of Italy
Citation17th International Congress on Acoustics, Physical Acoustics B, Ultrasonic properties of liquids, liquid crystals, suspensions and emulsions, 7K.N2.02
AbstractThe absorption of sound in suspensions with particles much smaller than the acoustic wavelength is mainly due to the viscous drag between the fluid and the particles. In addition, viscous asymmetries generated in the flow field by the particles, partially entrained by the acoustic field, contribute to it. Such asymmetries, known as acoustic wakes, are considered in this work to derive the absorption coefficient based on the modification of the slip flow velocity. An experimental study is also presented where the value of the absorption coefficient is determined.
DescriptionCommunication presented at the 17th International Congress on Acoustics, Rome, 2-7 September 2001.
Appears in Collections:(IA) Comunicaciones congresos
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