Influence of a water density maximum on the cooling of a water-saturated porous medium

A numerical study of the cooling of a water-saturated porous medium in a cylindrical heat-insulated vessel with a vertical cooling element is performed. The effect of convective heat transfer on the cooling a porous medium saturated with water is carried out, taking into account the density inversion at various values of the porous medium permeability. It is shown that the effect of a maximum water density during the convective motion of water in porous media in the vicinity of zero temperature should be taken into account. The presence of a maximum water density in highly permeable soils restructures the flow and reduces the convective transfer rate, which slows down the cooling of the system.