Introduction to groundwater modeling : finite difference and finite element methods
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Bibliographic Information
Introduction to groundwater modeling : finite difference and finite element methods
Academic Press, c1982
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Originally published: San Francisco : W.H. Freeman. c1982
Includes bibliographical references (p. [227]-233) and index
Description and Table of Contents
Description
The dramatic advances in the efficiency of digital computers during the past decade have provided hydrologists with a powerful tool for numerical modeling of groundwater systems. Introduction to Groundwater Modeling presents a broad, comprehensive overview of the fundamental concepts and applications of computerized groundwater modeling. The book covers both finite difference and finite element methods and includes practical sample programs that demonstrate theoretical points described in the text. Each chapter is followed by problems, notes, and references to additional information. This volume will be indispensable to students in introductory groundwater modeling courses as well as to groundwater professionals wishing to gain a complete introduction to this vital subject.
Table of Contents
Introduction: Models. Physics of Groundwater Flow. Laplaces Equation. Regional Groundwater Flow System. Finite Differences: Steady State Flow (Laplaces Equation): Differences for Derivatives. Iterative Methods. Gauss--Seidel Computer Program. Boundary Conditions. Finite Differences: Steady State Flow (Poissons Equation): Poissons Equation. Island Recharge. Finite Difference Models. Unconfined Aquifer with Dupuit Assumptions. Validity of a Numerical Solution. Finite Differences: Transient Flow: Transient Flow Equation. Explicit Finite Difference Approximation. Implicit Finite Difference Approximation. Unconfined Aquifer with Dupuit Assumptions. Other Solution Methods. Matrix Notation. Tridiagonal Matrices. Alternating Direction Implicit (ADI) Method. Prickett--Lonnquist and Trescott--Pinder--Larson Models. Calibration and Verification. Finite Elements: Steady-State Flow: Galerkins Method. Triangular Elements. Assembly of ConductanceMatrix. Boundary Conditions. Finite Element Computer Program. Region-Near-a-Well Example. Seepage through a Dam. Poissons Equation. Finite Elements: Transient Flow: Galerkins Method. Rectangular Element. Assembly of Matrix Differential Equation. Solving the Matrix Differential Equation. Computer Program for Reservoir Problem. Advective--Dispersive Transport: Dispersion. Solute Transport Equation. Finite Element Example: Solute Dispersion in Uniform Flow Field. Concluding Remarks. Appendixes: Anisotropy and Tensors. Variational Method. Isoparametric Quadrilateral Elements. Analogies. Glossary of Symbols. References. Index.
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