Abstract: | The problem of ice melting in unsaturated frozen soil in the presence of the capillary pressure in the water-air zone is formulated.
The complete system of boundary conditions on the phase transition front is derived. For solving the nonlinear problem a numerical
method is proposed. The dependence of the water saturation distribution on the form of the Leverett function, the capillary
pressure, and the external pressure and temperature gradients is investigated. In the limiting case of saturated frozen soil
the numerical and analytical solutions are compared. |