Numerical modelling of contracted sharp-crested weirs and combined weir and gate systems

Date

2020-05-01

Author

Altan Sakarya, Ayşe Burcu
Duru, Aysel

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Discharge measurement and control structures are widely employed in hydraulic engineering applications. The objective of this study is to numerically investigate the modelling of two different structures, namely sharp-crested weirs as Problem 1 and combined weir and gate systems as Problem 2. The research methodology herein is based on the comparison of results of numerical simulations with experimental data for both problems separately. For the purpose of performing numerical simulations, the Reynolds-averaged Navier-Stokes (RANS) equations are solved by finite volume formulation using commercially available Flow-3D software. Assessment of empirical data and numerical findings for both problems reveals that discharge rates agree reasonably well. In addition, using the capabilities of numerical modelling, weir and gate discharge coefficients in the combined system are calculated separately which were not easy to obtain in experimental studies. It is seen that gate and weir discharge coefficients of the combined system are different and higher than the corresponding coefficients of the individual systems. (c) 2020 John Wiley & Sons, Ltd.

Subject Keywords

Agronomy and Crop Science, Soil Science

URI

https://hdl.handle.net/11511/46713

Journal

IRRIGATION AND DRAINAGE

DOI

https://doi.org/10.1002/ird.2468

Collections

Department of Civil Engineering, Article

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Citation Formats

A. B. Altan Sakarya and A. Duru, “Numerical modelling of contracted sharp-crested weirs and combined weir and gate systems,” IRRIGATION AND DRAINAGE, pp. 0–0, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/46713.