Prediction Equation for Reaeration in Open-Channel Flow

by Y. Lam Lau, Res. Sci.; Hydr. Unit, Canada Centre for Inland Waters, Burlington, Ontario, Canada,

Serial Information: Journal of the Sanitary Engineering Division, 1972, Vol. 98, Issue 6, Pg. 1063-1068

Document Type: Journal Paper


The problem of predicting the reaeration rate in open-channel flow has attracted considerable attention in the recent years. The purpose of this technical note is to present evidence that the data from the 1-ft wide flume in fact matches the field data of Churchill just as well as the data from the 2-ft wide flume. A prediction equation is proposed which is applicable to all three sets of data. Some observations are made based on dimensional analysis and inspection of available data.

Subject Headings: Aeration | Open channels | Open channel flow | Flumes | Flow rates | Field tests | Inspection

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