Mathematical Simulation of the Transport of Salt in the Case of Filtration and Moisture Transfer in Saturated–Unsaturated Soils in a Moistening Regime

Abstract

Mathematical simulation of the process of the transport of salts by filtering a salt solution and by moisture transfer at the action of horizontal systematic drainage in a moistening regime has been made. Based on the developed computational algorithm, a numerical solution of the boundary-value problem of plane-vertical force-free stationary filtration of a salt solution to horizontal systematic drainage in the presence of a free surface of ground water in the region of a saturated–unsaturated soil has been obtained. The processes of filtration of a salt solution during the action of drainage in the region of complete saturation and moisture transfer and in the region of incomplete saturation are investigated with account for the transport of salts in corresponding subregions.