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Stream Reaeration in Nonuniform Flow: Macroroughness Enhancement

By Hubert Chanson and Luke Toombes


The authors presented two papers that are a welcome addition to the topic of water quality and stream reaeration. The renewal theory and small eddy model provide interesting results for smooth and small-roughness channels. The discussers feel, however, that the second paper highlights some limits of the method, particularly when free-surface aeration takes place. The present discussion provides additional material on the problem of stream reaeration in the presence of \u27whitewater\u27 (i.e., air bubble entrainment). It complements the original paper, and some references are added, including large-scale data

Topics: flow aeration, mass transfer, hydraulic structures, 290800 Civil Engineering, 290802 Water and Sanitary Engineering, 291100 Environmental Engineering, C1
Publisher: American Society of Civil Engineers
Year: 2000
DOI identifier: 10.1061/(ASCE)0733-9429(2000)126:3(222)
OAI identifier:

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