Journal ArticleDOI
Modeling of non-reactive solute transport in fractured clayey till during variable flow rate and time.
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TLDR
High resolution preferential water-saturated flow and bromide transport data were used to evaluate the suitability of equivalent porous medium (EPM), dual porosity (DP) and discrete fracture/matrix diffusion (DFMD) numerical modeling approaches for assessment of flow and non-reactive solute transport in clayey till.About:
This article is published in Journal of Contaminant Hydrology.The article was published on 2004-02-01. It has received 56 citations till now. The article focuses on the topics: Effective porosity & Macropore.read more
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A review of model applications for structured soils: a) Water flow and tracer transport.
TL;DR: This review compiles results published over the past decade on the application of physically based models for simulating PF and PNE non-reactive tracer transport for scales ranging from the soil column to the catchment area.
Journal ArticleDOI
Numerical modeling of stress effects on solute transport in fractured rocks
TL;DR: In this article, a hybrid approach combining discrete element method (DEM) for stress-flow simulations and a particle tracking algorithm is developed to systematically investigate the influence of stress on solute transport in fractured rocks, considering different stress and hydraulic pressure conditions.
Journal ArticleDOI
Evaluating equilibrium and non-equilibrium transport of bromide and isoproturon in disturbed and undisturbed soil columns.
TL;DR: Results suggested faster transport of isoproturon in the undisturbed soil due to higher preferential flow and lower fraction of equilibrium sorption sites and cannot be ruled out that higher degradation rates were due, at least in part, to the adopted first-order model.
Journal ArticleDOI
Meta-analysis of the effects of soil properties, site factors and experimental conditions on solute transport
TL;DR: In this paper, a database of breakthrough curve experiments under steady-state flow conditions was assembled and the authors focused on three indicators of preferential solute transport: namely the 5-arrival time, the holdback factor, and the ratio of piston-flow and average transport velocities.
Journal ArticleDOI
Transport and reduction of nitrate in clayey till underneath forest and arable land.
Peter R. Jørgensen,Johanne Urup,Tina Helstrup,Marina Bergen Jensen,Finn Eiland,Finn Pilgaard Vinther +5 more
TL;DR: Simulations using a calibrated discrete fracture matrix diffusion (DFMD) model could reasonably reproduce the denitrification and resulting flux of nitrate observed during variable flow rate from the columns.
References
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OtherDOI
A modular three-dimensional finite-difference ground-water flow model
TL;DR: A computer program for simulating ground-water flow in three dimensions by using a block-centered finite-difference approach and has a modular structure, which permits the addition of new packages to the program without modifying existing packages.
MT3DMS: A Modular Three-Dimensional Multispecies Transport Model for Simulation of Advection, Dispersion, and Chemical Reactions of Contaminants in Groundwater Systems; Documentation and User's Guide
Chunmiao Zheng,P P Wang +1 more
TL;DR: MT3DMS as discussed by the authors is the next generation of the modular three-dimensional transport model, with significantly expanded capabilities, including the addition of a third-order total-variation-diminishing (TVD) scheme for solving the advection term that is mass conservative but does not introduce excessive numerical dispersion and artificial oscillation.
Journal ArticleDOI
Three-dimensional analysis of variably-saturated flow and solute transport in discretely-fractured porous media
René Therrien,Edward A. Sudicky +1 more
TL;DR: In this article, a discrete fracture, saturated-unsaturated numerical model is developed where the porous matrix is represented in three dimensions and fractures are represented by two-dimensional planes, and the robust Newton-Raphson iteration method is implemented according to the efficient procedure of Kropinski (1990) and Forsyth and Simpson (1991) to solve the variably-saturated flow equation.
Journal ArticleDOI
Tracer Characteristics of Brilliant Blue FCF
Markus Flury,Hannes Flühler +1 more
TL;DR: In this paper, a field experiment was conducted to compare the mobility of Brilliant Blue FCF with that of I - and Br - and the results of the batch studies suggest that the dye forms ion pairs with Ca 2+.
Journal ArticleDOI
The Laplace Transform Galerkin Technique for large-scale simulation of mass transport in discretely fractured porous formations
E. A. Sudicky,R. G. McLaren +1 more
TL;DR: In this article, the Laplace transform Galerkin method is extended for application to discretely fractured media with emphasis on large-scale modeling capabilities, which avoids time stepping and permits the use of a relatively coarse grid without compromising accuracy.
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Three-dimensional analysis of variably-saturated flow and solute transport in discretely-fractured porous media
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