The self-similar problem of the diffusion mixing of vapour–gas–condensate systems

Self-similar solutions of the problem of the diffusion mixing of vapour–gas–condensate mixtures, which is a generalization of the Stefan problem, are constructed. It is established on the basis of the solution of the problem concerning the mixing a vapour with a gas that, depending on the initial temperatures, mixing can occur with the formation of an intermediate vapour–gas–condensate layer. A chart of the possible structures of the mixing zones of a vapour–gas–condensate system with a vapour-gas mixture is obtained.