00000nam 2200000zi 4500 9.871138 CaOODSP 20241203113647 m o d f cr ||||||||||| 190404s1995 onc #ot f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn--- En13-5/95-63E-PDF Lau, Y. L., author. Relative importance of mean velocity and bed shear on biofilm accumulation in open-channel flows / Y.L. Lau. Burlington, Ontario : National Water Research Institute, [1995] 1 online resource (15 unnumbered pages). text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; 95-63 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "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. Includes abstract in French. gccst Rivers gccst Water management Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; 95-63. (CaOODSP)9.844121 PDF 1.42 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-95-63-eng.pdf