00000nam 2200000zi 4500 9.904637 CaOODSP 20221107180614 m o d f cr |n||||||||| 211104e197908##oncd ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre En36-539/63-1979E-PDF Beltaos, S., 1944- author. Transverse mixing tests in natural streams / by S. Beltaos. Burlington, Ontario : Environment Canada, National Water Research Institute = Environnement Canada, Institut national de recherche sur les eaux, August 1979. 1 online resource (v, 21 pages, 10 unnumbered pages) : charts. text txt rdacontent computer c rdamedia online resource cr rdacarrier [Unpublished manuscript] Digitized edition from print [produced by Environment and Climate Change Canada]. "This manuscript has been submitted to the Journal of the Hydraulics Division, ASCE for publication and the contents are subject to change." Includes bibliographical references (pages 19-20). "Field tests to determine the transverse mixing coefficients of three river reaches, under both open water and ice covered conditions, are described. To interpret the test results, the streamtube method for mixing calculations, developed earlier by others, is used. For evaluating transverse mixing coefficients, the widely used moments method is modified so as to be consistent with the streamtube approach. Application of the modified method to test data gave consistent results, thus reinforcing the streamtube approach. For the tests described here, the transverse mixing coefficient ranges between 0.01 m2/s and 0.09 m2/s; when this coefficient is non-dimensionalized with the hydraulic radius and shear velocity, it lies between 0.4 and 2.5. Open water values of the dimensionless transverse mixing coefficient are less than the corresponding values under an ice cover by as much as two and one-half times"--Abstract. Includes abstracts in French. Diffusion in hydrology Research. Turbulence Mathematical models. Water Pollution. Diffusion en hydrologie Recherche. Turbulence Modèles mathématiques. Eau Pollution. National Water Research Institute (Canada), issuing body. Unpublished manuscript (National Water Research Institute (Canada)) (CaOODSP)9.901451 PDF 1.14 MB https://publications.gc.ca/collections/collection_2021/eccc/en36-539/En36-539-63-1979-eng.pdf