Relative importance of mean velocity and bed shear on biofilm accumulation in open-channel flows / Y.L. Lau.: En13-5/95-63E-PDF

"Experiments on biofilm growth were carried out to investigate whether bottom shear stress or average velocity is more appropriate as a parameter for investigating the effect of flow on biofilm formation in channel flows. The tests were conducted in two identical channels located side by side, using the same water supply. By having different bottom slopes or roughness elements, or both, tests were set up in which the flows in the two channels had equal velocities but different bottom shear stresses or equal bottom shear stresses but different velocities. Porcelain balls were used as bottom roughness elements and the accumulation of biofilm on the balls was monitored. Comparisons of the rates of biofilm accumulation indicate that the average velocity is the more important parameter"--Abstract.

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Publication information
Department/Agency Canada. Environment Canada.
National Water Research Institute (Canada)
Title Relative importance of mean velocity and bed shear on biofilm accumulation in open-channel flows / Y.L. Lau.
Series title NWRI contribution ; 95-63
Publication type Series - View Master Record
Language [English]
Format Electronic
Electronic document
Note(s) Digitized edition from print [produced by Environment and Climate Change Canada].
Includes bibliographical references.
Includes abstract in French.
Publishing information Burlington, Ontario : National Water Research Institute, [1995]
Author / Contributor Lau, Y. L., author.
Description 1 online resource (15 unnumbered pages).
Catalogue number
  • En13-5/95-63E-PDF
Subject terms Rivers
Water management
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