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
Ground water whirls.
TL;DR: Numerical experiments with steady-state ground water flow models show that spiraling flow lines occur in layered aquifers that have different anisotropic horizontal hydraulic conductivities in adjacent layers, implying that a single well in a system with a single an isotropic layer within an otherwise isotropic aquifer causes eight whirls.
Journal ArticleDOI
The Role of Groundwater for Lake‐Water Quality and Quantification of N Seepage
Jacob Kidmose,Peter Engesgaard,Daniela Oliveira Ommen,Bertel Nilsson,Mogens Flindt,Frede Østergaard Andersen +5 more
TL;DR: This study is the first known attempt to estimate the decrease of nitrate loading via groundwater to a seepage lake when an identified catchment source (a crop field) is removed.
Journal ArticleDOI
Groundwater flow and heterogeneous discharge into a seepage lake: Combined use of physical methods and hydrochemical tracers
Jolanta Kazmierczak,Sascha Müller,Bertel Nilsson,Dieke Postma,Joanna Czekaj,Eva Sebok,Søren Jessen,Sachin Karan,C. Stenvig Jensen,K. Edelvang,Peter Engesgaard +10 more
TL;DR: In this article, the authors investigated groundwater discharge into a seepage lake by combining flux measurements, hydrochemical tracers, geological information and a telescopic modelling approach using first two-dimensional (2D) regional then 2D local flow and flow path models.
Journal ArticleDOI
Simulation/optimization modeling for robust pumping strategy design.
TL;DR: The Robustness Enhancing Optimizer (REO) couples genetic algorithm and tabu search as optimizers and incorporates aquifer parameter sensitivity analysis to guide multiple-realization optimization.
Journal ArticleDOI
Drawdown, Velocity, Storage, and Capture Response Functions for Multiaquifer Systems
Thomas Maddock,Laurel J. Lacher +1 more
TL;DR: In this article, the authors extend the use of response functions to the notion of capture for multilayered aquifer systems and demonstrate the utility of the response functions as hydrologic constraints in management optimization models.
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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