PNG 550
Reactive Transport in the Subsurface

Lesson 6: Flow and Solute Transport Processes in 1D Systems

PrintPrint

Overview

This lesson introduces physical processes, including advection, diffusion, and dispersion processes, in 1D system. This is the first time in this course that we introduce the space dimension. An example will be shown about how to set up a one-dimentional (1D) flow and transport simulation in a homogeneous column in CrunchFlow.

Learning Outcomes

By the end of this lesson, you should be able to:

  • Understand the definition of advective, diffusive, and dispersive transpor;
  • Grasp the meaning of the one-dimentional advection-dispersion equation (ADE);
  • Comprehend the important parameters and the application of dimensionless numbers (Péclet number) in unifying different observations;
  • Understand what controls the shape of tracer breakthrough curves;
  • Simulate 1D flow and transport of non-reactive tracers using CrunchFlow.

Lesson Roadmap

Lesson Roadmap
Required Readings
  1. Chapter 3 in Geochemistry, groundwater, and pollution, 2nd edition, by C. A. J. Appelo and D. Postma, 2005
  2. CrunchFlow manual (2009), page 72-85; CrunchFlow exercise 6 and 7
Optional Reading
(if phreeqc)
  • Page 16-17, 32-37, and 234-252 in Phreeqc manual (version 3.0), also see example 11, 12, 13, 15, and 21.
To Do
  • Light board video
  • Example video
  • Homework

Questions?

If you have any questions, please post them to our Questions? discussion forum (not e-mail), located in Canvas. The TA and I will check that discussion forum daily to respond. While you are there, feel free to post your own responses if you, too, are able to help out a classmate.