Scale-Dependent Dispersion from a Pit
Publication: Journal of Hydrologic Engineering
Volume 7, Issue 2
Abstract
It is fairly well accepted that contaminant transport in aquifers can be modelled accurately only if dispersion coefficients are allowed to increase with distance downstream. However, this also increases the difficulty of obtaining exact solutions of the contaminant transport equation. Therefore, singular perturbation methods are used to obtain a relatively simple approximate solution for scale-dependent dispersion from a pit located in a region of uniform flow. Comparison of exact and approximate perturbation solutions for two simpler but related problems suggests that the perturbation approach used here is likely to give sufficient accuracy for many, if not most, applications.
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Information
Published In
Journal of Hydrologic Engineering
Volume 7 • Issue 2 • March 2002
Pages: 168 - 174
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Aug 17, 2000
Accepted: Jul 24, 2001
Published online: Mar 1, 2002
Published in print: Mar 2002
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