Comparative Characteristics of Evaporative Convection Regimes in Different Statements of Boundary Value Problem for Convection Equations.

We analyze different statements of the boundary value problem for the convection equations in order to use Ostroumov–Birikh type exact solutions for describing the evaporative convection regimes in two-layer systems of liquids and gas–vapor mixtures filling a plane channel. The statements differ in the types of boundary conditions for the vapor concentration and temperature functions on the channel walls. We discuss the boundary value problems modeling two-layer flows in the channel, describe the characteristics of hydrodynamic, thermal, and concentration fields for the working HFE7100-nitrogen system and classify the types of flows by distinguishing three classes: purely thermocapillary, mixed, and Poiseuille type flows. [ABSTRACT FROM AUTHOR]