Author: Admin
Company: Microsoft

Specialization: 010700/17 Theoretical and Mathematical Physics
Program : 35 Statistical theory of heterogeneous systems
Program director: Ph.D A. K. Shchekin
Department of Statistical Physics 
Scientific advisor::  Ph.D. A. E. Kuchma
Reviewer:: Ph.D A. K. Shchekin. 

The influence of the Stefan flow on vapor influxes and droplet composition at isothermal binary condensation.
D.S. Martyukova

The subject of this paper is studying the problem of droplet growth  in the atmosphere of two condensable vapors and noncondensable carrier gas. The results of such study are essential for fundamental and applied problems of the theory of decomposition of solid and liquid solutions, and the theory of phase transitions in the Earth atmosphere. A typical example of binary condensation under the conditions of the Earth atmosphere is condensation of water and sulfuric acid vapor in rain drops.  
The purpose of this paper is to obtain expressions for the flow of refined condensable vapors and steady-state concentration of the solution in a drop in isothermal conditions, taking into account the effect of hydrodynamic (Stefan) flow of the medium and the dependence of the diffusion coefficients of condensable vapors from the local composition of the gas mixture. The expressions obtained for the flux densities of steam can be used directly in the analytical description of the evolution of size and chemical composition of the droplet.

The list of the publications 
1. Martyukova Darya. Effects of Stefan's flow and concentration-dependent diffusivity in binary condensation// Conference abstracts (International Student Conference “Science and Progress”). St.Petersburg, 2011. P. 200.