Abstract
A set of equations has been derived for the nonstationary composition, size, and temperature of a growing or evaporating multicomponent microdroplet of a nonideal solution under arbitrary initial conditions. Equations for local nonstationary diffusion molecular and heat fluxes in a mixture of a multicomponent vapor with a noncondensable carrier gas have been obtained within the framework of nonequilibrium thermodynamics with allowance for hydrodynamic flow of the medium. The derived closed set of equations takes into account the nonstationarity of the diffusion and heat transfer, effect of thermodiffusion and other cross effects in the multicomponent vapor–gas medium, the Stefan flow, and droplet boundary motion, as well as the nonideality of the solution in the droplet. The general approach has been illustrated by the consideration of the multicomponent medium at low concentrations of vapors taking into account its thermal expansion due to the Stefan flow in the case of a nonstationary diffusion regime of the nonisothermal condensation growth of a one-component droplet.
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Original Russian Text © A.E. Kuchma, A.K. Shchekin, D.S. Martyukova, A.A. Lezova, 2016, published in Kolloidnyi Zhurnal, 2016, Vol. 78, No. 3, pp. 325–337.
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Kuchma, A.E., Shchekin, A.K., Martyukova, D.S. et al. Equations for the evolution of a growing or evaporating free microdroplet under nonstationary conditions of diffusion and heat transfer in a multicomponent vapor–gas medium. Colloid J 78, 340–352 (2016). https://doi.org/10.1134/S1061933X16030078
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DOI: https://doi.org/10.1134/S1061933X16030078