Abstract
An exact‐in‐time two‐dimensional finite element model for simulating convective‐dispersive solute transport in a tile‐drained field is validated against observed data from a subsurface drainage experiment. The model is capable of predicting the long‐term effects of different irrigation and drainage practices on the salt distribution in an artificially drained soil‐aquifer system. The model was used to predict transient changes in the salinity of the soil, the shallow ground water table, and the drain effluent. Results are also presented on the effects of imposing alternative drain spacing‐depth combinations, initial groundwater salinities, solute distribution coefficients, and different types of layering of the aquifer, on the computed salinity distributions in the unsaturated zone, the groundwater, and the drain effluent.
Published Version
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