Dessication of porous media: intermediate-scale flow cell experiments and numerical simulations
Soil desiccation is recognized as a potentially robust remediation process for the deep vadose zone. Before this technique can be deployed, several techniques issues need to addressed. In this paper, two experiments are described addressing the issue of potential energy limitations to reduce soil moisture. The experiments are conducted in wedge-shaped, intermediate-scale flow cells. The experiment in the homogeneous porous medium showed a maximum evaporative cooling of ~10° C and a rapid decrease in relative humidity when the drying front passed. In the heterogeneous experiments, the fine-grained ...
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