Irrigation Sciences and Engineering

Irrigation Sciences and Engineering

Improving Water Diversion Efficiency in Converging Side Weirs through Side Vane Installation: a numerical simulation

Document Type : Research Paper

Authors
Kosar Neysi 1
Mehdi Daryaee 2
Seyed Mahmood Kashefipour 3
Amirreza Shahriari 4
Mohammadreza Zayeri 5
1 Master Student, Department of Water Structures, Faculty of Water and Environmental Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
2 Associate professor, Department of Water Structures, Faculty of Water and Environmental Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
3 Professor, Department of Water Structures, Faculty of Water and Environmental Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
4 Ph.D Student, Department of Water Structures, Faculty of Water and Environmental Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
5 Assistant professor, Department of Water Structures, Faculty of Water and Environmental Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
10.22055/jise.2025.48446.2145
Abstract
Side weirs are important components in irrigation and drainage systems, used for controlling and diverting flow. Given the advantages of side weirs in converging channels, improving the hydraulic performance of these structures is essential. This study aims to enhance the hydraulic performance of converging side weirs through the installation of a side vane. Numerical simulations were conducted using the Flow-3D software with various turbulence models, and the results were validated against experimental data ( ). In this study, three different angles for side vane installation (60, 90, and 120 degrees) at two positions, upstream and downstream of the weir, were investigated. The results showed that installing the side vane at the upstream position of the weir with a 60-degree angle led to a 32% increase in the diversion flow compared to the control scenario (without side vane). The analysis revealed that the reduction in flow velocity downstream of the side weir and the creation of a low-velocity zone around the side vane contributed to more effective flow guidance toward the weir, thereby increasing its efficiency. The practical application of the results of this research is the improvement of converging side weir design and their enhanced efficiency in managing water flows.
Keywords
Converging Side Weir
Flow-3D model
Side vane
hydraulic structure
Subjects
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Irrigation Sciences and Engineering
Volume 47, Issue 4
Winter 2025
Pages 93-104

  • Receive Date 24 November 2024
  • Revise Date 28 January 2025
  • Accept Date 05 February 2025
  • Publish Date 20 January 2025