V.N.Oliynik Thermal dispersion and dissipation of sound in concentrated dispersion liquid and liquid-gas mediums |
Acoustic bulletin, Vol. 4 ¹ 4, (2001) |
| On the basis of the classical model of emulsion by M.A.Isakovich the physical and mathematical models of forming the acoustic properties of emulsions, bubble mediums, and aerosols with allowance for local thermal interaction of their microstructural elements are designed. It is established that the model by Isakovich can be regarded as a limit case of the model accounting microstructural interaction, which describes a bubble medium. The numerical analysis showed that at small and moderate spacing intervals between the grains of emulsion the model, accounting the thermal interplay, displays much better correspondence to the general physical viewpoint about the process of the low-frequency sound propagation in dispersed mixtures, than the classical one with independent microstructural elements. |
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KEY WORDS: dispersion mixture, grain of emulsion, microstructure, thermal interface, sound velocity, attenuation |
| TEXT LANGUAGE: Ukrainian |