Accurate Modeling of River Pollutant Transport
Publication: Journal of Environmental Engineering
Volume 110, Issue 4
Abstract
A simple, accurate, Lagrangian numerical scheme is developed for modeling the advection and dispersion of a nonconservative pollutant in one‐dimensional, nonuniform river flow. The scheme is free from the common propensity to produce false oscillations and smearing in steep front regions. Testing of the scheme demonstrates its high accuracy, which is maintained on very coarse grids. A successful application is demonstrated in which it has been used to model the passage of patches of anoxic water down the Waipa River, New Zealand. Longitudinal dispersion coefficients were inferred by matching model predictions to observed steep fronts of DO and These were confirmed by subsequent dye studies. River reaeration and deoxygenation coefficients were also inferred, these being useful for management oriented simulation in this river and elsewhere.
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Published In
Journal of Environmental Engineering
Volume 110 • Issue 4 • August 1984
Pages: 808 - 827
Copyright
Copyright © 1984 ASCE.
History
Published online: Aug 1, 1984
Published in print: Aug 1984
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