Intercomparison between TRIO-EF and IMPACT codes with reference to experimental strontium migration data
Identifieur interne : 000206 ( Istex/Curation ); précédent : 000205; suivant : 000207Intercomparison between TRIO-EF and IMPACT codes with reference to experimental strontium migration data
Auteurs : L. Trotignon [France] ; M.-H. Fauré [France] ; A. Stietel [France] ; C. Riglet-Martial [France] ; M. Sardin [France] ; P. Vitorge [France] ; F. Lefèvre [France]Source :
- Journal of Contaminant Hydrology [ 0169-7722 ] ; 1997.
Descripteurs français
- Wicri :
- topic : Hydrologie, Migration, Simulation.
English descriptors
- KwdEn :
- Activity coefficients, Chemical species, Chemical transformations, Code predictions, Column length, Column outlet, Column profile, Constant temperature, Contaminant, Contaminant hydrology, Davies approximation, Discretisation, Discretisation schemes, Equilibrium constants, Exchange phenomena, Experimental data, Experimental results, Finite element code, Fluid flow, Good agreement, Hydrology, Impact codes, Impact predictions, Impact simulations, Initial injection, Intercomparison exercise, Ionex, Ionex experiment, Migration, Migration codes, Peclet number, Porous medium, Porous volume, Precipitation, Reference experiments, Relative uncertainty, Simulation, Slight differences, Soil columns, Solex, Solex experiment, Solid line, Solute, Solute transport, Srco3s, Steady flow, Strontium, Strontium transport, Technical note, Time step, Transport model, Trotignon, Water resour.
- Teeft :
- Activity coefficients, Chemical species, Chemical transformations, Code predictions, Column length, Column outlet, Column profile, Constant temperature, Contaminant, Contaminant hydrology, Davies approximation, Discretisation, Discretisation schemes, Equilibrium constants, Exchange phenomena, Experimental data, Experimental results, Finite element code, Fluid flow, Good agreement, Hydrology, Impact codes, Impact predictions, Impact simulations, Initial injection, Intercomparison exercise, Ionex, Ionex experiment, Migration, Migration codes, Peclet number, Porous medium, Porous volume, Precipitation, Reference experiments, Relative uncertainty, Simulation, Slight differences, Soil columns, Solex, Solex experiment, Solid line, Solute, Solute transport, Srco3s, Steady flow, Strontium, Strontium transport, Technical note, Time step, Transport model, Trotignon, Water resour.
Abstract
Abstract: This work presents an intercomparison exercise between two geochemical migration codes, TRIO-EF (an object-oriented finite element code) and IMPACT (a chemical engineering code using mixing cells in series). The predictions of the two codes are compared with the reference experimental results obtained in a previous study of strontium transport in soil columns. This simulated geochemical system is well documented and includes ion exchange and dissolution-precipitation reactions. The solution transport is simulated by a one-dimensional advection-dispersion model. The predictions of TRIO-EF and IMPACT are both in good agreement with the experimental results. However, slight differences can be observed between the two codes, especially when concentration discontinuities are involved, such as precipitation fronts or changes in boundary conditions. These discrepancies between the two codes can mainly be attributed to the different discretisation approaches.
Url:
DOI: 10.1016/S0169-7722(96)00075-7
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<front><div type="abstract" xml:lang="en">Abstract: This work presents an intercomparison exercise between two geochemical migration codes, TRIO-EF (an object-oriented finite element code) and IMPACT (a chemical engineering code using mixing cells in series). The predictions of the two codes are compared with the reference experimental results obtained in a previous study of strontium transport in soil columns. This simulated geochemical system is well documented and includes ion exchange and dissolution-precipitation reactions. The solution transport is simulated by a one-dimensional advection-dispersion model. The predictions of TRIO-EF and IMPACT are both in good agreement with the experimental results. However, slight differences can be observed between the two codes, especially when concentration discontinuities are involved, such as precipitation fronts or changes in boundary conditions. These discrepancies between the two codes can mainly be attributed to the different discretisation approaches.</div>
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