Solute Transport Modeling for Urban Drainage Structures
Publication: Journal of Environmental Engineering
Volume 134, Issue 8
Abstract
Solute transport and dispersion processes affect the performance of a wide range of water engineering structures. Some urban drainage network models transport the pollutants by advection only, whereas others also account for the effects of dispersion, although there is only limited knowledge regarding appropriate values for dispersion parameters. Computational fluid dynamics (CFD)-based software tools enable engineers to simulate flow patterns and associated pollutant transport mechanisms within both natural and engineered hydraulic structures. It is feasible to use CFD to represent solute transport using two contrasting approaches, an unsteady species (scalar) transport model or a discrete phase (Lagrangian particle tracking) model. This paper outlines these two approaches, using the example of a storage tank to demonstrate, compare, and validate the two approaches, and to explore a number of issues associated with interpretation of the simulation outputs. It is concluded that both CFD-based approaches may be usefully utilized for the design and modeling of urban drainage systems.
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Acknowledgments
The writers would like to thank Ian Guymer for access to the original laboratory data reproduced in Fig. 10.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 134 • Issue 8 • August 2008
Pages: 640 - 650
Copyright
© 2008 ASCE.
History
Received: Jan 19, 2006
Accepted: Feb 1, 2008
Published online: Aug 1, 2008
Published in print: Aug 2008
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