Mathematical modeling of water exchange between saturated and unsaturated zones of drained soil
DOI:
https://doi.org/10.15407/dopovidi2016.06.038Keywords:
soil, water capacity, water exchange, saturation lack, draining, wetting, moistureAbstract
A numerical solution of the one-dimensional task for a saturated-unsaturated flow in uniform soil at a constant water table velocity is obtained. A great number of numerical computations of the water exchange between two zones for the sand class by the international classification FAO are performed. Approximate expressions for water exchange characteristics with regard for the effects of water table position and velocity separately are proposed. For the above characteristics, the significance of the water table dynamics is estimated.
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