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Un modèle diphasique self-consistant pour la propagation du son dans des solutions concentrées de particules rigides.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Baudoin, Michael Thomas, J. Coulouvrat, François |
| Copyright Year | 2007 |
| Abstract | A self-consistent coupled phase theory is proposed to study the propagation of acoustic waves in concentrated suspensions of rigid particles in the long wavelength regime. Rigorous ensemble averaged equations are derived for each phase and closure is achieved by introducing a self-consistent scheme initially developed by Buyevich & Shchelchkova [Prog. Aerospace Sci., 1978] in the case of incompressible flows. With this model, mutual interactions of group of spheres are taken into account at all orders. Moreover the correlations of particles in position, that is to say the modification of particles repartition due to their non-overlapping property, have been integrated in a simple way. The introduction of these effects in the theory allows us to obtain a close agreement of the calculated attenuation with experimental data by Hipp et al. [Langmuir, 2002] in colloidal suspensions of silica in water for volume fraction up to 30% and frequency range between 1 et 100 MHz. Mots-clefs : acoustique diffusion multiple self-consistant |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://documents.irevues.inist.fr/bitstream/handle/2042/16260/CFM2007-1129.pdf?sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
