Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI | http://purl.tuc.gr/dl/dias/0C06BAC6-0CD9-417E-96F9-1E7B4F6AD0AE | - |
| Identifier | https://doi.org/10.1029/WR026i003p00437 | - |
| Language | en | - |
| Extent | 10 pages | en |
| Title | Analysis of one-dimensional solute transport through porous media with spatially variable retardation factor | en |
| Creator | Chrysikopoulos Constantinos | en |
| Creator | Χρυσικοπουλος Κωνσταντινος | el |
| Creator | Peter K. Kitanidis | en |
| Content Summary | A closed-form analytical small-perturbation (or first-order) solution to the one-dimensional advection-dispersion equation with spatially variable retardation factor is derived to investigate the transport of sorbing but otherwise nonreacting solutes in hydraulically homogeneous but geochemically heterogeneous porous formations. The solution is developed for a third- or flux-type inlet boundary condition, which is applicable when considering resident (volume-averaged) solute concentrations, and a semi-infinite porous medium. For mathematical simplicity it is hypothesized that the sorption processes are based on linear equilibrium isotherms and that the local chemical equilibrium assumption is valid. The results from several simulations, compared with predictions based on the classical advection-dispersion equation with constant coefficients, indicate that at early times, spatially variable retardation affects the transport behavior of sorbing solutes. The zeroth moments corresponding to constant and variable retardation are not necessarily equal. The impact of spatially variable retardation increases with increasing Péclet number. | en |
| Type of Item | Peer-Reviewed Journal Publication | en |
| Type of Item | Δημοσίευση σε Περιοδικό με Κριτές | el |
| License | http://creativecommons.org/licenses/by/4.0/ | en |
| Date of Item | 2015-09-20 | - |
| Date of Publication | 1990 | - |
| Subject | Analytical small-perturbation solution | en |
| Bibliographic Citation | C. V. Chrysikopoulos ,P. K. Kitanidis , P.V. Roberts, "Analysis of one-dimensional solute transport through porous media with spatially variable retardation factor" , Wa. resourc. researc.,vol. 26, no. 3 ,pp.437-446,1990.doi :10.1029/WR026i003p00437 | en |
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