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Numerical Model for Electro-Osmotic Drainage in Unsaturated Soils
Abstract A numerical model coupling of water flow and electrical transport in a deformable porous medium is developed to simulate the electroosmosis drainage in the unsaturated soil. This model is in accounting for unsaturated-induced nonlinear changes in the physical and geoelectrical properties that take place on the soil, with the additions of two-dimensional consolidation, and an external hydraulic gradient. The exponential relation is used to represent nonlinear changes in the hydraulic and electro-osmotic conductivities, and soil-water retention curve. The algorithm of this model is conducted using finite-element method. The pore water pressure, settlement, moisture content, drainage, and electric potential and current density as a function of time and position within the soil can be obtained. Finally, the proposed numerical solution is verified to be accurate compared with the experimental measurement.
Numerical Model for Electro-Osmotic Drainage in Unsaturated Soils
Abstract A numerical model coupling of water flow and electrical transport in a deformable porous medium is developed to simulate the electroosmosis drainage in the unsaturated soil. This model is in accounting for unsaturated-induced nonlinear changes in the physical and geoelectrical properties that take place on the soil, with the additions of two-dimensional consolidation, and an external hydraulic gradient. The exponential relation is used to represent nonlinear changes in the hydraulic and electro-osmotic conductivities, and soil-water retention curve. The algorithm of this model is conducted using finite-element method. The pore water pressure, settlement, moisture content, drainage, and electric potential and current density as a function of time and position within the soil can be obtained. Finally, the proposed numerical solution is verified to be accurate compared with the experimental measurement.
Numerical Model for Electro-Osmotic Drainage in Unsaturated Soils
Wang, Liujiang (author) / Liu, Sihong (author) / Wang, Yaoming (author) / Xue, Chenyang (author)
2018-10-11
8 pages
Article/Chapter (Book)
Electronic Resource
English
Electroosmosis , Drainage , Numerical modelling , Unsaturated soil , Validation Engineering , Geoengineering, Foundations, Hydraulics , Geotechnical Engineering & Applied Earth Sciences , Soil Science & Conservation , Sustainable Development , Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution
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