A modular three-dimensional finite-difference ground-water flow model
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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.Abstract:
A computer program for simulating ground-water flow in three dimensions is presented. This report includes detailed explanations of physical and mathematical concepts on which the model is developed. Ground-water flow within the aquifer is simulated by using a block-centered finite-difference approach. The program is written in Fortran 77 and has a modular structure, which permits the addition of new packages to the program without modifying existing packages.read more
Citations
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Journal ArticleDOI
Review of strategies for handling geological uncertainty in groundwater flow and transport modeling
Jens Christian Refsgaard,Steen Christensen,Torben O. Sonnenborg,Dorte Seifert,Anker Lajer Højberg,Lars Troldborg +5 more
TL;DR: General challenge in model averaging with respect to choosing mutually exclusive and collectively exhaustive choice models, as well as to assign weights when models are used beyond their calibration base, are discussed.
Journal ArticleDOI
Natural attenuation of contaminated soils.
TL;DR: Modelling of contaminant migration plays a key role in evaluating natural attenuation as a remediation option and in ensuring that there will be no adverse impact on humans and the environment.
Journal ArticleDOI
Comparison of instream methods for measuring hydraulic conductivity in sandy streambeds.
TL;DR: Streambed hydraulic conductivity values were determined at seven stream transects in the Platte River Basin in Nebraska using different instream measurement techniques, indicating that selection of a method for measuring streambed K needs to consider the vertical location of the sediments that are most likely to limit the rate of ground water/surface water interaction.
Journal ArticleDOI
Extinction depth and evapotranspiration from ground water under selected land covers.
TL;DR: In this paper, variable saturation flow theory is used to simulate ground water evapotranspiration for three land covers and a range of soil properties under drying soil conditions, and the decoupling of ground water and vadose zone was found to begin at water table depths between 30 and 100 cm, depending on the soil texture.
Journal ArticleDOI
A dual-domain mass transfer approach for modeling solute transport in heterogeneous aquifers: application to the macrodispersion experiment (MADE) site
TL;DR: In this paper, a large-scale natural-gradient tracer test in a highly heterogeneous aquifer at the Macrodispersion Experiment (MADE) site on the Columbus Air Force Base in Mississippi is simulated using three-dimensional hydraulic conductivity distributions derived from borehole flowmeter test data.
References
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Journal ArticleDOI
Applied Numerical Analysis. By C.F. Gerald. Pp. xii, 340. £3·60. 1970. (Addison-Wesley.)
Book
Finite Element Simulation in Surface and Subsurface Hydrology
George F. Pinder,William G. Gray +1 more
Book
Methods for the Numerical Solution of Partial Differential Equations
Von Rosenberg,U Dale +1 more
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