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Advances in Environmental Research Volume 3, Number 2, June 2014 , pages 117-129 DOI: https://doi.org/10.12989/aer.2014.3.2.117 |
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Numerical modelling of contaminant transport using FEM and meshfree method |
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Rupali S. Satavalekar and Vishwas A. Sawant
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| Abstract | ||
| Groundwater contamination is seeking a lot of attention due to constant degradation of water by landfills and waste lagoons. In many cases heterogeneous soil system is encountered and hence, a finite element model is developed to solve the advection-dispersion equation for layered soil system as FEM is a robust tool for modelling problems of heterogeneity and complex geometries. Recently developed Meshfree methods have advantage of eliminating the mesh and construct approximate solutions and are observed that they perform effectively as compared to conventional FEM. In the present study, both FEM and Meshfree method are used to simulate phenomenon of contaminant transport in one dimension. The results obtained are agreeing with the values in literature and hence the model is further used for predicting the transport of contaminants. Parametric study is done by changing the dispersion coefficient, average velocity, geochemical reactions, height of leachate and height of liner for obtaining suitability. | ||
| Key Words | ||
| contaminants; drinking water; FEM and meshfree methods; landfill tech; pollutants (metals, organics, organometallics) | ||
| Address | ||
| Department of Civil Engineering, Indian Institute of Technology Roorkee - 247667, India. | ||
