Invited Paper Three-dimensional Numerical Codes For Simulating Groundwater Contamination: LEA3D And NONLEA3D, Transport With Equilibrium And Nonequilibrium Adsorption
Price
Free (open access)
Transaction
Volume
5
Pages
8
Published
1994
Size
849 kb
Paper DOI
10.2495/ENV940151
Copyright
WIT Press
Author(s)
M. Putti, S. Ferraris, C. Pamconi, G. Pini & G. Gambolati
Abstract
In this paper we describe the finite element codes for two three-dimensional mod- els of reactive transport in groundwater. The transport models are linear and in- clude advection, dispersion, decay, and sorption. Sorption under both equilibrium (LEA3D code) and nonequilibrium (NONLEASo) conditions is considered. In the latter case a "dual porosity" concept is used that subdivides the porous medium into five distinct interacting regions. The coupled model for nonequilibrium sorp- tion is solved using an integro- differential approach. The large sparse systems of equations generated by the finite elem
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