Abstract
Results from reaeration experiments are presented for three cases: case 1: reaeration by bottom generated turbulence for open channels; case 2: reaeration by surface generated turbulence due to wind on water, and case 3: reaeration by wind on channel flow, in which effects of bottom generated turbulence and of surface generated turbulence are combined. The main results are curves showing the reaeration factor kL as function of σu, the rms value of the horizontal component of the velocity near the surface. Correlations are found for each of the cases, with scattering about average curves which might be purely random. However, large differences exist in the trends for the different cases. In order to generalize the results, and to apply them to cases where no data exist, an attempt is made to correlate σu with parameters of the mean flow, by means of a dissipation velocity uε calculated from the average dissipation. Good results are obtained for cases 1 and 2, and can be extended to correlate the data for case 3.
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© 1984 Springer Science+Business Media Dordrecht
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Plate, E.J., Friedrich, R. (1984). Reaeration of Open Channel Flow. In: Brutsaert, W., Jirka, G.H. (eds) Gas Transfer at Water Surfaces. Water Science and Technology Library, vol 2. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1660-4_31
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DOI: https://doi.org/10.1007/978-94-017-1660-4_31
Publisher Name: Springer, Dordrecht
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