A Numerical Method for Cross-Section Changes and Gates Resulting from the Riemann Problem in Irrigation Canal Systems
Publication: Journal of Irrigation and Drainage Engineering
Volume 150, Issue 1
Abstract
Hydraulic simulation models offer unlimited opportunities for improving the performance of irrigation canal systems by studying the flow behavior in a large and complex canal network under a variety of design and management scenarios. This paper presents an inner boundary in the junction-point water stage prediction and correction method, which deals with abrupt section change and the gates. To reduce the number of global iterations in the correction step, an acceleration method for local updates is also proposed. The results show that the proposed inner boundary satisfies the C Property and consistency, which can deal with hydrostatic conditions and dam-break junctions. The simulations in the test canal system show that the proposed inner boundary can simulate the control gate action and the resulting hydraulic response process in each pool. The proposed acceleration method can effectively reduce the number of global iterations, but the acceleration effect can only be improved by about two times.
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Data Availability Statement
All data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This research was supported by the National Natural Science Foundation of China (Grant Nos. 51979202 and 51879199). We also acknowledge the constructive comments from the reviewers.
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 150 • Issue 1 • February 2024
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Apr 18, 2023
Accepted: Oct 24, 2023
Published online: Dec 14, 2023
Published in print: Feb 1, 2024
Discussion open until: May 14, 2024
ASCE Technical Topics:
- Business management
- Canals
- Design (by type)
- Domain boundary
- Engineering fundamentals
- Gates (hydraulic)
- Hydraulic design
- Hydraulic engineering
- Hydraulic networks
- Hydraulic structures
- Irrigation
- Irrigation engineering
- Irrigation systems
- Management methods
- Mathematics
- Models (by type)
- Numerical models
- Practice and Profession
- Water and water resources
- Waterways
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