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Transport Upscaling in Highly Heterogeneous Aquifers and the Prediction of Tracer Dispersion at the MADE Site
Abstract : We present an upscaled Lagrangian approach to predict the plume evolution in highly heterogeneous aquifers. The model is parameterized by transport independent characteristics such as the statistics of hydraulic conductivity and the Eulerian flow speed. It can be conditioned on the tracer properties, and flow data at the injection region. Thus, the model is transferable to different solutes and hydraulic conditions. It captures the large scale non-Gaussian features for the evolution of the longitudinal mass distribution observed for the bromide and tritium tracer plumes at the macrodispersion experiment (MADE) site (Columbus, Mississippi, USA), which are characterized by a slow moving peak and pronounced forward tailing. These large scale features are explained by advective tracer propagation due to a broad distribution of spatially persistent Eulerian flow speeds as a result of spatial variability in hydraulic conductivity.
https://hal-brgm.archives-ouvertes.fr/hal-03019402
Contributeur : Vivien Hakoun <>
Soumis le : mardi 24 novembre 2020 - 16:29:30
Dernière modification le : samedi 26 décembre 2020 - 13:46:10
Contributeur : Vivien Hakoun <>
Soumis le : mardi 24 novembre 2020 - 16:29:30
Dernière modification le : samedi 26 décembre 2020 - 13:46:10
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