Surface Aeration
Publication: Journal of Environmental Engineering
Volume 121, Issue 1
Abstract
A model is proposed for calculating surface reaeration flux for dissolved oxygen (DO) calculations in a river. It is based on a two-film approach, where film thickness is estimated from turbulent length scale and diffusivity considerations, and requires only one calibration coefficient. Equivalent values of the reaeration coefficient are calculated and shown to compare well with previous empirical or semiempirical models tested against extensive data sets under well-mixed (vertically) conditions. The present approach allows a simple calculation of surface oxygen flux and provides a means of modeling DO in a density-stratified river, in which many previous formulations are inadequate since they are based on vertically averaged conditions.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 121 • Issue 1 • January 1995
Pages: 113 - 118
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: Jan 1, 1995
Published in print: Jan 1995
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