Search Results for: modeling-groundwater-flow-and-contaminant-transport

Science Posted on

Grundwasserchemie

Praxisorientierter Leitfaden zur numerischen Modellierung von Beschaffenheit, Kontamination und Sanierung aquatischer Systeme

Author: Broder J. Merkel,Britta Planer-Friedrich

Publisher: Springer-Verlag

ISBN: 366207611X

Category: Science

Page: 219

View: 7894

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Die Autoren konzentrieren sich in ihrem Werk auf die Lösung praxisorientierter hydrogeochemischer Fragestellungen und schließen damit eine Lücke im Bereich anwendungsorientierter Lehrbücher. Ein erster Teil fasst dabei die Theorie soweit zusammen, daß es auch Neulingen im Bereich der Modellierung und Nichtchemikern leicht gemacht wird, das anspruchsvolle Thema zu erfassen. Akademikern mit hydrogeologischer oder chemischer Grundausbildung sowie Studenten höherer Semester in den relevanten Fachgebieten erlaubt das Buch, anhand der beschriebenen Beispiele und Lösungen, eine eigenständige Erarbeitung der Sachverhalte. Die beiliegende CD-ROM ermöglicht zudem eine rasche Überprüfung der Ergebnisse, bzw. das Nachvollziehen aller Aufgaben und Lösungen anhand der beigefügten PhreeC-Eingabedateien. Da das Programm PhreeC kostenfrei verfügbar ist und mit Windows-Oberfläche auf der CD-ROM vorhanden ist, kann sofort mit der Modellierung begonnen werden.
Science Posted on

Grundwasserchemie

Author: Broder J. Merkel,Britta Planer-Friedrich

Publisher: Springer-Verlag

ISBN: 3540874690

Category: Science

Page: 242

View: 9642

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Der praxisorientierte Leitfaden bietet einen schnellen Einstieg in die thermodynamische Modellierung. Aufbauend auf einem minimalen theoretischen Hintergrund liegt der Fokus auf praktischen Beispielen unter Anwendung des Computerprogramms PHREEQC. In der Neuauflage sind zusätzlich die Möglichkeiten des CD-MUSIC-Konzepts zur Oberflächenmodellierung erläutert. Detaillierte Beschreibungen helfen dem Nutzer, schrittweise zu immer komplexeren Modellierungen zu gelangen. Alle Programme sowie die Lösungen zu den Aufgaben befinden sich auf der CD zum Buch.
Science Posted on

Modeling Groundwater Flow and Contaminant Transport

Author: Jacob Bear,Alexander H.-D. Cheng

Publisher: Springer Science & Business Media

ISBN: 1402066821

Category: Science

Page: 834

View: 4509

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In many parts of the world, groundwater resources are under increasing threat from growing demands, wasteful use, and contamination. To face the challenge, good planning and management practices are needed. A key to the management of groundwater is the ability to model the movement of fluids and contaminants in the subsurface. The purpose of this book is to construct conceptual and mathematical models that can provide the information required for making decisions associated with the management of groundwater resources, and the remediation of contaminated aquifers. The basic approach of this book is to accurately describe the underlying physics of groundwater flow and solute transport in heterogeneous porous media, starting at the microscopic level, and to rigorously derive their mathematical representation at the macroscopic levels. The well-posed, macroscopic mathematical models are formulated for saturated, single phase flow, as well as for unsaturated and multiphase flow, and for the transport of single and multiple chemical species. Numerical models are presented and computer codes are reviewed, as tools for solving the models. The problem of seawater intrusion into coastal aquifers is examined and modeled. The issues of uncertainty in model input data and output are addressed. The book concludes with a chapter on the management of groundwater resources. Although one of the main objectives of this book is to construct mathematical models, the amount of mathematics required is kept minimal.
Technology & Engineering Posted on

The Handbook of Groundwater Engineering, Second Edition

Author: Jacques W. Delleur

Publisher: CRC Press

ISBN: 1420006002

Category: Technology & Engineering

Page: 1320

View: 7769

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A complete treatment of the theory and practice of groundwater engineering, The Handbook of Groundwater Engineering, Second Edition provides a current and detailed review of how to model the flow of water and the transport of contaminants both in the unsaturated and saturated zones, covers the production of groundwater and the remediation of contaminated groundwater.
Mathematics Posted on

Partielle Differentialgleichungen und numerische Methoden

Author: Stig Larsson,Vidar Thomee

Publisher: Springer-Verlag

ISBN: 3540274227

Category: Mathematics

Page: 272

View: 2400

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Das Buch ist für Studenten der angewandten Mathematik und der Ingenieurwissenschaften auf Vordiplomniveau geeignet. Der Schwerpunkt liegt auf der Verbindung der Theorie linearer partieller Differentialgleichungen mit der Theorie finiter Differenzenverfahren und der Theorie der Methoden finiter Elemente. Für jede Klasse partieller Differentialgleichungen, d.h. elliptische, parabolische und hyperbolische, enthält der Text jeweils ein Kapitel zur mathematischen Theorie der Differentialgleichung gefolgt von einem Kapitel zu finiten Differenzenverfahren sowie einem zu Methoden der finiten Elemente. Den Kapiteln zu elliptischen Gleichungen geht ein Kapitel zum Zweipunkt-Randwertproblem für gewöhnliche Differentialgleichungen voran. Ebenso ist den Kapiteln zu zeitabhängigen Problemen ein Kapitel zum Anfangswertproblem für gewöhnliche Differentialgleichungen vorangestellt. Zudem gibt es ein Kapitel zum elliptischen Eigenwertproblem und zur Entwicklung nach Eigenfunktionen. Die Darstellung setzt keine tiefer gehenden Kenntnisse in Analysis und Funktionalanalysis voraus. Das erforderliche Grundwissen über lineare Funktionalanalysis und Sobolev-Räume wird im Anhang im Überblick besprochen.
Technology & Engineering Posted on

Applied Contaminant Transport Modeling

Theory and Practice

Author: Chunmiao Zheng,Gordon D. Bennett

Publisher: Wiley

ISBN: 9780471285366

Category: Technology & Engineering

Page: 464

View: 4178

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Applied Contaminant Transport Modeling Theory and Practice Chunmiao Zheng and Gordon D. Bennett The design of remedial systems for groundwater contamination requires a thorough understanding of how various interacting processes — advection, dispersion, and chemical reactions — influence the movement and fate of contaminants. Solute transport simulation provides an ideal vehicle to synthesize these controlling processes, evaluate their interactions, and test the effectiveness of remedial measures. Applied Contaminant Transport Modeling is the first complete resource designed to provide clear coverage of the basic principles of solute transport simulation — including the theory behind the most common numerical techniques for solving transport equations, and step-by-step guidance on the development and use of field-scale models. Written by two experts with extensive practical experience in the field, Applied Contaminant Transport Modeling clearly explains: Factors controlling the transport and fate of solutes in the subsurface —g including advective and dispersive transport and chemical reaction — and the equations governing these processes Development of mathematical models of solute transport regimes and representative analytical solutions to the transport equation Particle tracking as a practical tool for solving many types of field problems Development of Eulerian-Lagrangian methods for solving advection-dispersion-reaction equations Step-by-step development and application of solute transport models — emphasizing problem formulation, model setup, parameter selection, calibration, and sensitivity analysis Sources of uncertainty in transport simulation, and methods of evaluating and managing uncertainty Applied Contaminant Transport Modeling presents detailed case histories illustrating how hydrologists, geologists, chemists, and environmental engineers apply transport models in real-life situations, including landfills, hazardous waste sites, and contaminated aquifers. An optional diskette designed to accompany the text provides software to help the reader explore the concepts and techniques presented in the text and gain hands-on experience in transport simulation. Driven by growing concern over groundwater quality and the rapid dissemination of computer technology, solute transport simulation has become an essential means of evaluating and solving groundwater contamination and remediation problems. Applied Contaminant Transport Modeling provides you with the tools to master this significant field of study.
Technology & Engineering Posted on

Flow and Contaminant Transport in Fractured Rock

Author: Jacob Bear,C-F. Tsang,Ghislain De Marsily

Publisher: Academic Press

ISBN: 0080916473

Category: Technology & Engineering

Page: 560

View: 7453

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In the past two or three decades, fractured rock domains have received increasing attention not only in reservoir engineering and hydrology, but also in connection with geological isolation of radioactive waste. Locations in both the saturated and unsaturated zones have been under consideration because such repositories are sources of heat and potential sources of groundwater contamination. Thus, in addition to the transport of mass of fluid phases in single and multiphase flow, the issues of heat transport and mass transport of components have to be addressed.
Science Posted on

Applied Groundwater Modeling

Simulation of Flow and Advective Transport

Author: Mary P. Anderson,William W. Woessner

Publisher: Academic Press

ISBN: 0080886949

Category: Science

Page: 381

View: 3806

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Creating numerical groundwater models of field problems requires careful attention to describing the problem domain, selecting boundary conditions, assigning model parameters, and calibrating the model. This unique text describes the science and art of applying numerical models of groundwater flow and advective transport of solutes. Key Features * Explains how to formulate a conceptual model of a system and how to translate it into a numerical model * Includes the application of modeling principles with special attention to the finite difference flow codes PLASM and MODFLOW, and the finite-element code AQUIFEM-1 * Covers model calibration, verification, and validation * Discusses pathline analysis for tracking contaminants with reference to newly developed particle tracking codes * Makes extensive use of case studies and problems
Groundwater Posted on

Groundwater Flow and Mass Transport Modeling

Author: N.A

Publisher: N.A

ISBN: N.A

Category: Groundwater

Page: 399

View: 9075

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Papers presented at various inter-disciplinary and multi-institutional training programmes, held at Andhra University during 23 January-4 February, 2006.
Technology & Engineering Posted on

Groundwater Optimization Handbook

Flow, Contaminant Transport, and Conjunctive Management

Author: Richard C. Peralta

Publisher: CRC Press

ISBN: 1439838070

Category: Technology & Engineering

Page: 532

View: 1862

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Existing and impending water shortages argue for improving water quantity and quality management. Groundwater Optimization Handbook: Flow, Contaminant Transport, and Conjunctive Management helps you formulate and solve groundwater optimization problems to ensure sustainable supplies of adequate quality and quantity. It shows you how to more effectively use simulation-optimization (S-O) modeling, an economically valuable groundwater management tool that couples simulation models with mathematical optimization techniques. Written for readers of varying familiarity with groundwater hydrology and mathematical optimization, the handbook approaches complex problems realistically. Its techniques have been applied in many legal settings, with produced strategies providing up to 57% improvement over those developed without S-O modeling. These techniques supply constructible designs, planning and management strategies, and metrics for performance-based contracts. Learn how to: Recognize opportunities for applying S-O models Lead client, agency, and consultant personnel through the strategy design and adaptation process Formulate common situations as clear deterministic/stochastic and single/multiobjective mathematical optimization problems Distinguish between problem nonlinearities resulting from physical system characteristics versus management goals Create an S-O model appropriate for your specific needs or select an existing transferrable model Develop acceptable feasible solutions and compute optimal solutions Quantify tradeoffs between multiple objectives Evaluate and adapt a selected optimal strategy, or use it as a metric for comparison Drawing on the author’s numerous real-world designs and more than 30 years of research, consulting, and teaching experience, this practical handbook supplies design procedures, detailed flowcharts, solved problems, lessons learned, and diverse applications. It guides you through the maze of multiple objectives, constraints, and uncertainty to calculate the best strategies for managing flow, contamination, and conjunctive use of groundwater and surface water. Ancillary materials are available from the Downloads tab on the book page at www.crcpress.com.
Science Posted on

Bioremediation and Natural Attenuation

Process Fundamentals and Mathematical Models

Author: Pedro J. Alvarez,Walter A. Illman

Publisher: John Wiley & Sons

ISBN: 0471738611

Category: Science

Page: 609

View: 6178

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A groundbreaking text and professional resource on naturalattenuation technology Natural attenuation is rapidly becoming a widely used approachto manage groundwater and soil contamination by hazardoussubstances in petroleum-product releases and leachate fromhazardous waste sites and landfills. This book provides, under onecover, the current methodologies needed by groundwater scientistsand engineers in their efforts to evaluate subsurface contaminationproblems, to estimate risk to human health and ecosystems throughmathematical models, and to design and formulate appropriateremediation strategies. Incorporating the authors' extensive backgrounds as educators,researchers, and consultants in environmental biotechnology andhydrogeology, the text emphasizes new concepts and recent advancesin the science, including: Quantification of the role of microbes in naturalattenuation Biodegradation and chemical transformation principles Immobilization and phase change Biotransformation mechanisms Groundwater flow and contaminant transport Analytical models for contaminant transport and reactionprocesses Numerical modeling of contaminant transport, transformation,and degradation Detailed descriptions of fundamental processes, characterizationapproaches, and analytical and numerical methods tied to relevantreal-world applications make Bioremediation and NaturalAttenuation: Process Fundamentals and Mathematical Models botha timely course text in hydrogeology and environmental engineeringand a valuable reference for anyone in the groundwater or riskassessment professions.
Science Posted on

Analytical Modeling of Solute Transport in Groundwater

Using Models to Understand the Effect of Natural Processes on Contaminant Fate and Transport

Author: Mark Goltz,Junqi Huang

Publisher: John Wiley & Sons

ISBN: 0470242345

Category: Science

Page: 272

View: 5100

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Modeling -- Contaminant transport modeling -- Analytical solutions to 1-D equations -- Analytical solutions to 3-D equations -- Method of moments -- Application of analytical models to gain insight into transport behavior
Technology & Engineering Posted on

Groundwater Models for Resources Analysis and Management

Author: Aly I. El-Kadi

Publisher: CRC Press

ISBN: 9781566701006

Category: Technology & Engineering

Page: 384

View: 4649

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Written by renowned experts in the field, this book assesses the status of groundwater models and defines models and modeling needs in the 21st century. It reviews the state of the art in model development and application in regional groundwater management, unsaturated flow/multiphase flow and transport, island modeling, biological and virus transport, and fracture flow. Both deterministic and stochastic aspects of unsaturated flow and transport are covered. The book also introduces a unique assessment of models as analysis and management tools for groundwater resources. Topics covered include model vs. data uncertainty, accuracy of the dispersion/convection equation, protocols for model testing and validation, post-audit studies, and applying models to karst aquifers.
Technology & Engineering Posted on

Numerical Groundwater Modelling

Flow and Contaminant Migration

Author: William C. Walton

Publisher: CRC Press

ISBN: 9780873711968

Category: Technology & Engineering

Page: 272

View: 7631

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This valuable new book, with 2 programs on diskettes, will help practitioners in solving groundwater flow and contamination problems by integrating simulation techniques. The reader is expected to have knowledge of hydrogeology, and have access to books on groundwater hydrogeology. Two microcomputer programs, in compiled FORTRAN 77 with source codes for simulating quasi-three-dimensional groundwater flow and contaminant migration, are presented in this book. The numerical and analytical techniques incorporated in these programs are described in detail. Data entry has been simplified so that the user can run the programs without worrying about FORTRAN input file structures and editors. The basic requirements are a monitor, dot-matrix printer, and an IBM-PC or compatible computer running DOS Version 2.1 or compatible. Programs require a full 640K RAM (minus that used by DOS) for their operation.
Science Posted on

A Practical Guide to Groundwater and Solute Transport Modeling

Author: Karlheinz Spitz,Joanna Moreno

Publisher: Wiley-Interscience

ISBN: N.A

Category: Science

Page: 461

View: 6737

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Focusing on modeling applications, this outstanding reference provides a step-by-step, non-mathematical approach to constructing and using realistic workable groundwater models on a daily basis. Extensive detailed drawings, case studies, practical examples, and sample models illustrate important concepts. Includes data on hydrogeologic features and pollutants plus a glossary of terms.
Technology & Engineering Posted on

Coastal Aquifer Management-Monitoring, Modeling, and Case Studies

Author: Alexander H.D. Cheng,Driss Ouazar

Publisher: CRC Press

ISBN: 9780203493496

Category: Technology & Engineering

Page: 296

View: 7064

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Approximately 70% of the world's population lives in coastal areas, and the majority of these people depend on coastal aquifers for freshwater. The fragility of these aquifers and their sensitivity to human activity demand informed, competent management to guarantee their survival. Significant knowledge and new technologies related to the subject have accumulated in the last two decades, and a need has emerged for a comprehensive reference that gathers and disseminates crucial information to engineering practitioners and policymakers. Coastal Aquifer Management-Monitoring, Modeling, and Case Studies provides the most advanced and up-to-date methods and tools for the study and protection of coastal aquifers. This "how-to" volume presents a worldwide perspective with contributions from an international panel of experts. They address topics such as geohydrology, optimization, uncertainty analysis, and GIS as they relate to geographically-specific case studies; knowledge from these examples can be applied to aquifer issues in other regions. A companion CD-ROM supplements the text with programs and graphics, making this overview an indispensable reference and tool for the analysis of critical freshwater resources.
Science Posted on

Subsurface Hydrology

Author: George F. Pinder,Michael A. Celia

Publisher: John Wiley & Sons

ISBN: 0470044195

Category: Science

Page: 400

View: 3567

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With an emphasis on methodology, this reference provides a comprehensive examination of water movement as well as the movement of various pollutants in the earth's subsurface. The multidisciplinary approach integrates earth science, fluid mechanics, mathematics, statistics, and chemistry. Ideal for both professionals and students, this is a practical guide to the practices, procedures, and rules for dealing with groundwater.