Environmental Fate and Transport Analysis with Compartment Modeling

ISBN: 9781138074132 出版年：2012 页码：239 Little, Keith W CRC Press

Introduction GEM Highlights Getting Started: Two Examples Organization and Suggested Reading Strategy GEM User's Guide Two Alternative Formulations of PRAM-Like Model GEM Input Files GEM Output Files Compartment Approach, Transport Mechanisms, and Boundary Conditions Compartment Approach Mass Balance Equation for Compartment i System of Transport Mass Balance Equations for Single Chemical System of Transport Mass Balance Equations for Multiple Chemicals Extension to Porous Media Boundary Conditions and Types of Compartments Source and Sink Terms Linear Source and Sink Terms System of Fate and Transport, Mass Balance Equations for Multiple Chemicals Source and Sink Terms for Nonlinear Systems Solution Techniques for Steady-State Problems Linear Systems Nonlinear Systems Accuracy of Solutions Solution Techniques for Dynamic Problems Introduction Explicit Forward Time (Euler) Method Explicit Centered Time (MacCormack) Method Implicit Back Time Method Implicit Centered Time (Crank-Nicolson) Method Cross-Method Comparisons and Summary of Error Characteristics for Linear Problems Appendix: Introduction to Matrices and Matrix Operations Index Chapters include references.