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Water Science & Technology Vol 66 No 6 pp 1325–1332 © IWA Publishing 2012 doi:10.2166/wst.2012.319 Experiments and 3D simulations of flow structures in junctions and their influence on location of flowmetersE. Mignot, H. Bonakdari, P. Knothe, G. Lipeme Kouyi, A. Bessette, N. Rivière and J.-L. Bertrand-KrajewskiCNRS-Université de Lyon, INSA Lyon, LMFA, Bât. Joseph Jacquard, 20 avenue A. Einstein, F-69621 Villeurbanne cedex, FranceUniversité de Lyon, INSA Lyon, LGCIE (Laboratory of Civil & Environmental Engineering), F-69621 Villeurbanne cedex, France E-mail: hossein.bonakdari@insa-lyon.fr Civil Engineering Department, University of Razi University, Kermanshah, Iran ABSTRACT Open-channel junctions are common occurrences in sewer networks and flow rate measurement often occurs near these singularities. Local flow structures are 3D, impact on the representativeness of the local flow measurements and thus lead to deviations in the flow rate estimation. The present study aims (i) to measure and simulate the flow pattern in a junction flow, (ii) to analyse the impact of the junction on the velocity distribution according to the distance from the junction and thus (iii) to evaluate the typical error derived from the computation of the flow rate close to the junction. Keywords: CFD modelling; channel junction; flow pattern; flowmeters; laboratory experiments eProduct: Buy this article for £24.00 (IWA MEMBER PRICE: £18.00) All prices include VAT. For customers where VAT should not be applied, the VAT amount will be removed upon payment |
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