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2023 | OriginalPaper | Buchkapitel

3. Contaminant Transport Modeling for Homogeneous and Heterogeneous Porous Systems Using MODFLOW Models-Based Scripting Python Package

verfasst von : Abhay Guleria, Sumedha Chakma, Vijay Pratap Singh

Erschienen in: Environmental Processes and Management

Verlag: Springer International Publishing

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Abstract

Contaminant transport modeling for soil column and heterogenous porous system poses a challenge when modeling approach involves non-linear and non-equilibrium sorption models and low permeability porous media (LPPM). Thus, in this chapter, contaminant transport modeling for soil column conditions via 1-D non-linear and non-equilibrium sorption models by means of MODFLOW models-based scripting Python package is presented. Further, contaminant plume evolution dynamics through homogeneous and heterogeneous porous systems, along with sensitivity analysis of flow and transport parameters, is conducted utilizing MT3D-USGS and MODFLOW 6 models. Results from 1-D modeling revealed sorption mass exchange rate as dominating parameter governing concentration at the outlet of soil column. Further, longitudinal dispersivity is observed to be affecting the peak value of concentration for non-equilibrium sorption model. The dominance of molecular diffusion and transverse dispersion on 2-D vertical transport through LPPM is observed from 2-D vertical transport modeling, whereas advection and mechanical dispersion are observed as governing mechanisms in the high hydraulic conductivity zone. Also, the difference in the simulation capabilities of two modeling (i.e., MT3D-USGS and MODFLOW 6) approaches is seen. Overall, this chapter highlighted the influence of sorption isotherm, LPPM, and modeling approach on the contaminant transport modeling.

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Literatur
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Metadaten
Titel
Contaminant Transport Modeling for Homogeneous and Heterogeneous Porous Systems Using MODFLOW Models-Based Scripting Python Package
verfasst von
Abhay Guleria
Sumedha Chakma
Vijay Pratap Singh
Copyright-Jahr
2023
DOI
https://doi.org/10.1007/978-3-031-20208-7_3