Estimation of the Hydraulic Parameters of a Stratified Alluvial Soil in the Region of El Haouareb—Central Tunisia. Experiments, Empirical, Analytical and Inverse Models
Modeling water flow and contaminant transport in the unsaturated zone is a difficult task that relies heavily on good hydrodynamic soil characterization. This article presents a complementarity between experimentation, direct modeling and inverse modeling in order to provide a better estimate of the...
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2024-10-01
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| author | Emna Abdennour Lamia Guellouz Mariem Dahmouni Mohamed Hachicha |
| author_facet | Emna Abdennour Lamia Guellouz Mariem Dahmouni Mohamed Hachicha |
| author_sort | Emna Abdennour |
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| description | Modeling water flow and contaminant transport in the unsaturated zone is a difficult task that relies heavily on good hydrodynamic soil characterization. This article presents a complementarity between experimentation, direct modeling and inverse modeling in order to provide a better estimate of the hydrodynamic parameters of stratified alluvial soil in the El Haouareb region of the Kairouane plain in Tunisia. A field sampling campaign was carried out. The samples collected underwent particle size analysis, bulk density measurements and infiltration tests using a mini-Muntz. In parallel, simple evaporation tests were applied to separate strata. In addition, a 2 m soil column was reconstituted and fitted with sensors to monitor water content, tension, temperature and electrical conductivity. An internal drainage test was performed on this monolith. Three methods were applied using experimental data to estimate soil hydrodynamic parameters. In the first method, pedotransfer functions were used (Rosetta platform) based on granulometric results and bulk density. In the second, water tension and water content monitored during the simple evaporation test were used to plot the soil–water retention curve (SWRC) using SWRC-Fit. In the third method, inverse modeling was applied to the internal drainage test. A comparison of the results showed that the inverse method had the lowest RMSE. Uncertainty analysis has been implemented for both the experimental and numerical set up. |
| format | Article |
| id | doaj-art-300022c843664046919d92b3208d58e7 |
| institution | Kabale University |
| issn | 2306-5338 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
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| series | Hydrology |
| spelling | doaj-art-300022c843664046919d92b3208d58e72024-11-26T18:06:16ZengMDPI AGHydrology2306-53382024-10-01111118110.3390/hydrology11110181Estimation of the Hydraulic Parameters of a Stratified Alluvial Soil in the Region of El Haouareb—Central Tunisia. Experiments, Empirical, Analytical and Inverse ModelsEmna Abdennour0Lamia Guellouz1Mariem Dahmouni2Mohamed Hachicha3National Research Institute of Rural Engineering, Water and Forests LR16 INRGREF02, Non-Conventional Water Valorization, University of Carthage, 17 rue Hédi Karray, B.P no. 10, Ariana 2080, TunisiaLaboratory of Modeling Hydraulics and Environment, National Institute of Engineering of Tunis, University of Tunis El Manar, B.P no. 37, The Belvedere, Tunis 1002, TunisiaNational Research Institute of Rural Engineering, Water and Forests LR16 INRGREF02, Non-Conventional Water Valorization, University of Carthage, 17 rue Hédi Karray, B.P no. 10, Ariana 2080, TunisiaNational Research Institute of Rural Engineering, Water and Forests LR16 INRGREF02, Non-Conventional Water Valorization, University of Carthage, 17 rue Hédi Karray, B.P no. 10, Ariana 2080, TunisiaModeling water flow and contaminant transport in the unsaturated zone is a difficult task that relies heavily on good hydrodynamic soil characterization. This article presents a complementarity between experimentation, direct modeling and inverse modeling in order to provide a better estimate of the hydrodynamic parameters of stratified alluvial soil in the El Haouareb region of the Kairouane plain in Tunisia. A field sampling campaign was carried out. The samples collected underwent particle size analysis, bulk density measurements and infiltration tests using a mini-Muntz. In parallel, simple evaporation tests were applied to separate strata. In addition, a 2 m soil column was reconstituted and fitted with sensors to monitor water content, tension, temperature and electrical conductivity. An internal drainage test was performed on this monolith. Three methods were applied using experimental data to estimate soil hydrodynamic parameters. In the first method, pedotransfer functions were used (Rosetta platform) based on granulometric results and bulk density. In the second, water tension and water content monitored during the simple evaporation test were used to plot the soil–water retention curve (SWRC) using SWRC-Fit. In the third method, inverse modeling was applied to the internal drainage test. A comparison of the results showed that the inverse method had the lowest RMSE. Uncertainty analysis has been implemented for both the experimental and numerical set up.https://www.mdpi.com/2306-5338/11/11/181unsaturated zonestratified alluvial soilhydrodynamic parametersexperiment direct and inverse modelingKairouanecentral Tunisia |
| spellingShingle | Emna Abdennour Lamia Guellouz Mariem Dahmouni Mohamed Hachicha Estimation of the Hydraulic Parameters of a Stratified Alluvial Soil in the Region of El Haouareb—Central Tunisia. Experiments, Empirical, Analytical and Inverse Models Hydrology unsaturated zone stratified alluvial soil hydrodynamic parameters experiment direct and inverse modeling Kairouane central Tunisia |
| title | Estimation of the Hydraulic Parameters of a Stratified Alluvial Soil in the Region of El Haouareb—Central Tunisia. Experiments, Empirical, Analytical and Inverse Models |
| title_full | Estimation of the Hydraulic Parameters of a Stratified Alluvial Soil in the Region of El Haouareb—Central Tunisia. Experiments, Empirical, Analytical and Inverse Models |
| title_fullStr | Estimation of the Hydraulic Parameters of a Stratified Alluvial Soil in the Region of El Haouareb—Central Tunisia. Experiments, Empirical, Analytical and Inverse Models |
| title_full_unstemmed | Estimation of the Hydraulic Parameters of a Stratified Alluvial Soil in the Region of El Haouareb—Central Tunisia. Experiments, Empirical, Analytical and Inverse Models |
| title_short | Estimation of the Hydraulic Parameters of a Stratified Alluvial Soil in the Region of El Haouareb—Central Tunisia. Experiments, Empirical, Analytical and Inverse Models |
| title_sort | estimation of the hydraulic parameters of a stratified alluvial soil in the region of el haouareb central tunisia experiments empirical analytical and inverse models |
| topic | unsaturated zone stratified alluvial soil hydrodynamic parameters experiment direct and inverse modeling Kairouane central Tunisia |
| url | https://www.mdpi.com/2306-5338/11/11/181 |
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