Print Email Facebook Twitter Numerical modelling of flow over sharp-crested rectangular contracted weir Title Numerical modelling of flow over sharp-crested rectangular contracted weir Author Yildiz, B. (TU Delft Rivers, Ports, Waterways and Dredging Engineering; Mugla Sitki Kocman University; Deltares) Uijttewaal, W.S.J. (TU Delft Environmental Fluid Mechanics) Bricker, J.D. (University of Michigan) Mosselman, E. (TU Delft Rivers, Ports, Waterways and Dredging Engineering; Deltares) Date 2021 Abstract Weirs are flow control structures that can be used for flow diversion purposes. They are classified according to section geometry or their length in the flow direction. For sharp-crested rectangular weirs, Rehbock [1] derived stage-discharge equations. In contracted geometries, streamlines curve at the approach flow leading to variations in flow structures. For this case, [2] proposed an equation for discharge as a function of the opening rate at the section (ratio of opening width to total width, b/B). We developed CFD models to test their accuracy in modelling weir flow. For the contracted weir cases, flow structures were visualised upstream of the weir. Subject modelling and visualisation toolsdiversion systems and water transfersCFDmultiphase flow modellingweirs To reference this document use: http://resolver.tudelft.nl/uuid:6b9c7184-e4bd-4607-9879-5d18559b2d0d Event The 2nd International Symposium on Water System Operations, 2021-09-01 → 2021-09-03, Bristol, United Kingdom Part of collection Institutional Repository Document type conference paper Rights © 2021 B. Yildiz, W.S.J. Uijttewaal, J.D. Bricker, E. Mosselman Files PDF Yildiz.pdf 520.86 KB Close viewer /islandora/object/uuid:6b9c7184-e4bd-4607-9879-5d18559b2d0d/datastream/OBJ/view