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Numerical Modelling of Contracted Sharp Crested Weirs

Author(s): A. Duru; A. B. Altan-Sakarya; M. A. Kokpinar

Linked Author(s): Mehmet Ali Kökpinar

Keywords: No keywords

Abstract: Sharp crested weirs are flow measurement structures which are frequently used for discharge measurements in channels and laboratories. In this study, numerical modelling technique was used in the solution of flow measurement problems, namely contracted sharp crested weirs. The numerical simulation of flow cases having similar conditions with the experiments from the previous studies is performed. The basic flow equations are solved using the finite-volume method of the commercially available software Flow-3D. The volume of fluid method is used to compute the free surface of the flow that interacts with the discharge measurement structures. In the numerical analysis, RNG turbulence closure model is employed as turbulence model. The computed results for the volumetric flow rate of the flow are compared with the experimental data. The comparisons of the experimental and numerical results studied show that the computational volumetric flow rate values are found to agree reasonably well with the experimental data.


Year: 2016

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