Thermal attenuation and dispersion of sound in a periodic emulsion

Yasuhide Fukumoto, Takeo Izuyama

研究成果: ジャーナルへの寄稿記事

15 引用 (Scopus)

抄録

We investigate the attenuation and dispersion of sound waves in suspensions and emulsions caused by the thermal-transport process. They combine to constitute the effective compressibility of the system. We begin with an attempt to justify the Isakovich formula for calculating the effective compressibility. The formula is then rewritten in terms of the interfacial heat flux. Isakovich's analysis is simply an independent-particle approximation. It is the purpose of this paper to consider the effect of interparticle interactions. The effective compressibility is calculated for an array of spherical particles or droplets centered at the points of a periodic lattice, immersed in a fluid of different species. Ewald's method of fast-convergent lattice sums in electrostatics is extended to a technique for the heat-conduction problem in a periodic emulsion. The computation for cubic lattices reveals that the interparticle interactions act to reduce, in the lower-frequency range, both the attenuation coefficient and the departure of the sound velocity from its high-frequency limit. The striking feature is that a drastic change in attenuation occurs when the thermal conductivity of the particle is substantially larger than that of the ambient fluid.

元の言語英語
ページ(範囲)4905-4921
ページ数17
ジャーナルPhysical Review A
46
発行部数8
DOI
出版物ステータス出版済み - 1 1 1992
外部発表Yes

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compressibility
emulsions
attenuation
acoustics
fluids
attenuation coefficients
cubic lattices
acoustic velocity
sound waves
conductive heat transfer
heat flux
thermal conductivity
frequency ranges
interactions
electrostatics
low frequencies
approximation

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

これを引用

Thermal attenuation and dispersion of sound in a periodic emulsion. / Fukumoto, Yasuhide; Izuyama, Takeo.

:: Physical Review A, 巻 46, 番号 8, 01.01.1992, p. 4905-4921.

研究成果: ジャーナルへの寄稿記事

Fukumoto, Yasuhide ; Izuyama, Takeo. / Thermal attenuation and dispersion of sound in a periodic emulsion. :: Physical Review A. 1992 ; 巻 46, 番号 8. pp. 4905-4921.
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