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Numerical Model for Electro-Osmotic Drainage in Unsaturated Soils

  • Liujiang WangEmail author
  • Sihong Liu
  • Yaoming Wang
  • Chenyang Xue
Conference paper
Part of the Environmental Science and Engineering book series (ESE)

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.

Keywords

Electroosmosis Drainage Numerical modelling Unsaturated soil Validation 

Notes

Acknowledgment

Financial support from the National Natural Science Foundation of China (Grant no. 51509077) and the Fundamental Research Funds for the Central Universities (Grant no. 2016B03514) are gratefully acknowledged.

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Liujiang Wang
    • 1
    Email author
  • Sihong Liu
    • 1
  • Yaoming Wang
    • 1
  • Chenyang Xue
    • 1
  1. 1.College of Water Conservancy and HydropowerHohai UniversityNanjingChina

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