The generalized statement of the problem of a two–phase liquid flow with continuously changing interface

In the paper the two-dimension problem of a two-phase immiscible liquid flow in the formulation of the incompressible Navier-Stokes equations with continuously changing interface is considered. For its definition during each moment of time is used so-called level set function. Besides discontinuous coefficients of kinematic viscosity and density in the formulation of a problem the effect of a surface tension is included. The generalized statement of a problem included conditions of the matching of the solution (in weak sense) on the common boundary between liquids is certain.