Environmental Fate And Transport Analysis With Compartment Modeling - Little Keith W. | Libro Crc Press 08/2012 - HOEPLI.it

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little keith w. - environmental fate and transport analysis with compartment modeling

Environmental Fate and Transport Analysis with Compartment Modeling

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Lingua: Inglese

CRC Press

Pubblicazione: 08/2012
Edizione: 1° edizione

Note Editore

Environmental Fate and Transport Analysis with Compartment Modeling explains how to use the powerful, highly flexible, and intuitive compartment approach to estimate the distribution of chemical contaminants in environmental media in time and space. Add this Easy-to-Use Approach to Your Environmental Modeling Toolbox This numerical technique enables readers to easily develop the equations that describe complex environmental problems by assembling the equations out of compartmental building blocks. The compartments may describe spatial subunits of single- or multi-environmental media, and the way one hooks them together implicitly provides the dimensionality of the problem. With this approach, assembling the equations to describe chemical fate and transport in a three-dimensional, multimedia system is fundamentally no more challenging than a one-dimensional, single-medium problem. Go Beyond "Black Box" Modeling with the Flexible GEM Software The book includes access to the Generic Environmental Model (GEM), a new software package developed by the author. This software implements the compartment approach based on user-prepared input files and solves the resulting mathematical equations. It allows readers to solve linear, nonlinear, and steady-state problems and offers four methods for solving dynamic problems. Each solution technique is reviewed, along with the error properties and the criteria for avoiding or minimizing numerical errors. The book also describes solution techniques and the underlying mathematical theory for solving nonlinear systems. Compartment Modeling from the Ground Up, Made Accessible to Non-Mathematicians A user-friendly introduction to environmental compartment modeling for the beginning modeler, this is also a useful resource for the experienced modeler. It combines a reference on compartment modeling with a user’s guide to the GEM. Throughout, the GEM is used to illustrate the theory with numerous examples, while the theoretical discussions illuminate the GEM’s functionality.


IntroductionGEM HighlightsGetting Started: Two ExamplesOrganization and Suggested Reading Strategy GEM User’s GuideTwo Alternative Formulations of PRAM-Like ModelGEM Input FilesGEM Output Files Compartment Approach, Transport Mechanisms, and Boundary ConditionsCompartment ApproachMass Balance Equation for Compartment iSystem of Transport Mass Balance Equations for Single ChemicalSystem of Transport Mass Balance Equations for Multiple ChemicalsExtension to Porous MediaBoundary Conditions and Types of Compartments Source and Sink TermsLinear Source and Sink TermsSystem of Fate and Transport, Mass Balance Equations for Multiple ChemicalsSource and Sink Terms for Nonlinear Systems Solution Techniques for Steady-State ProblemsLinear SystemsNonlinear SystemsAccuracy of Solutions Solution Techniques for Dynamic ProblemsIntroductionExplicit Forward Time (Euler) MethodExplicit Centered Time (MacCormack) MethodImplicit Back Time MethodImplicit Centered Time (Crank–Nicolson) MethodCross-Method Comparisons and Summary of Error Characteristics for Linear Problems Appendix: Introduction to Matrices and Matrix Operations Index Chapters include references.


Keith W. Little, Ph.D., P.E., is a consulting engineer specializing in the development and application of mathematical modeling and systems analysis methods to environmental engineering and water resources problems. Dr. Little earned a Ph.D. from the University of North Carolina at Chapel Hill where, in 1985, he was awarded the Bernard Greenberg Award for Excellence in Doctoral Research. This research was the genesis of the GEM software used to illustrate the concepts in this book. Since then, the GEM software has evolved in functionality and application and has been used to support risk assessment-based decision making at the U.S. Environmental Protection Agency (EPA). Dr. Little has enjoyed a 30-year career in environmental engineering and research, including 15 years as a research environmental engineer at RTI International, where he led the environmental modeling group. He has authored numerous technical reports and articles for peer-reviewed journals. He has also been active in various professional organizations and was president of the Colorado section of the American Water Resources Association in 1995. He is currently an independent consultant in Raleigh, North Carolina.

Altre Informazioni



Condizione: Nuovo
Dimensioni: 9.25 x 6.125 in Ø 1.25 lb
Formato: Copertina rigida
Illustration Notes:63 b/w images, 23 tables and Approx. 374 equations
Pagine Arabe: 244

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