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The International Conference on Multiphase Systems, ICMS'2000
Ufa, RUSSIA, June 15-17, 2000

Dynamics of Plane, Spherical and Cylindrical Perturbations of small Amplitude in Polydispersed Vapor-Gas-Droplets Systems

Gubaidullin D. A.

Institute of Mechanics and Engineering RAS, Kazan, RUSSIA

A linear theory on the propagation of plane, spherical and cylindrical waves in the polydispersed gas-droplets suspensions is presented. The case is considered when the gas carrier phase is a homogeneous mixture of two components. The first one is a vapor, and the second is a neutral gas. Both non-steady and non-equilibrium effects of the phase interaction (mass, momentum, energy interface exchange) are taken into account. A general dispertion equation was obtained which doesn't depend on the distance from axis or the center of symmetry. The wave equation that describes the propagation weak spherical and cylindrical perturbations in monodispersed gas-particle suspentions was derived. Dynamics of weak impulse of pressure in polydisperse air and water drop mixtures with use the fast Fourier transform algorithm was studied. The strongest attenuation and changing of form of spherical and cylindrical perturbations in contrast to the plane case in ascertained.