Soil Physics with HYDRUS: Modeling and Applications / Edition 1

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Overview

Numerical models have become much more efficient, making their application to problems increasingly widespread. User-friendly interfaces make the setup of a model much easier and more intuitive while increased computer speed can solve difficult problems in a matter of minutes. Co-authored by the software’s creator, Dr. Jirka Šimůnek, Soil Physics with HYDRUS: Modeling and Applications demonstrates one- and two-dimensional simulations and computer animations of numerical models using the HYDRUS software.

Classroom-tested at the University of Georgia by Dr. David Radcliffe, this volume includes numerous examples and homework problems. It provides students with access to the HYDRUS-1D program as well as the Rosetta Module, which contains large volumes of information on the hydraulic properties of soils. The authors use HYDRUS-1D for problems that demonstrate infiltration, evaporation, and percolation of water through soils of different textures and layered soils. They also use it to show heat flow and solute transport in these systems, including the effect of physical and chemical nonequilibrium conditions. The book includes examples of two-dimensional flow in fields, hillslopes, boreholes, and capillary fringes using HYDRUS (2D/3D). It demonstrates the use of two other software packages, RETC and STANMOD, that complement the HYDRUS series.

Hands-on use of the windows-based codes has proven extremely effective when learning the principles of water and solute movement, even for users with very little direct knowledge of soil physics and related disciplines and with limited mathematical expertise. Suitable for teaching an undergraduate or lower level graduate course in soil physics or vadose zone hydrology, the text can also be used for self-study on how to use the HYDRUS models. With the information in this book, you can run models for different scenarios and with different parameters, and thus gain a better understanding of the physics of water flow and contaminant transport.

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Product Details

  • ISBN-13: 9781420073805
  • Publisher: CRC Press
  • Publication date: 5/24/2010
  • Edition description: New Edition
  • Edition number: 1
  • Pages: 388
  • Product dimensions: 6.30 (w) x 9.30 (h) x 1.00 (d)

Table of Contents

Soil Solid Phase
Introduction
Soil Phases
Soil Texture
Soil Mineralogy
Soil Structure
Summary
Derivations
Problems

Soil Water Content and Potential
Introduction
Energy and Work
Properties of Bulk Water
Properties of Water at Air and Solid Interfaces
Soil Water Content
Measuring Soil Water Content
Soil Water Potential
Measuring Soil Water Potential Components
The Soil Water Retention Curve
RETC Program
Summary
Derivations
Problems

Steady Water Flow in Soils
Introduction
Steady Flow in Saturated Soil
Steady Flow in Unsaturated Soil
Measurements of Hydraulic Properties
Summary
Derivations

Heat Flow in Soils
Introduction
Surface Energy Balance
Steady Soil Heat Flux
Transient Soil Heat Flux
Soil Heat Flow with Hydrus-1d
Summary
Derivations
Problems

Transient Water Flow in Soils
Introduction
Transient Water Flow
Numerical Solutions to the Richards Equation
Infiltration
Redistribution
Evaporation
Transpiration
Preferential Flow
Groundwater Recharge and Discharge
Inverse Solutions and Parameter Optimization
Summary
Derivations
Problems

Solute Transport
Introduction
Conservation and Flux Equations
Advection Dispersion Equation
Stanmodand Cxtfit
Numerical Approaches for Solute Transport
HydrusExamples of Solute Transport
Summary
Derivations
Problems

Appendix
References
Index

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