Abstract
Bank erosion plays an important role in the hydro-morphodynamics and evolution of natural rivers. Therefore, it is essential to have a reliable bank erosion model for accurate simulation of hydro-morphodynamic processes. We developed and successfully implemented a new, feasible bank erosion model in Delft3D software. The developed model considers physical bank erosion processes to a greater extent than previous models. Model performance was assessed by comparison with a previously reported experiment in a mobile-bed-and-bank laboratory open-channel bend flume. The results from our developed model were compared with those from the standard Delft3D and angle of repose bank erosion models. We showed that progressive lateral bank erosion as well as the corresponding hydro-morphodynamics of the channel were better predicted by the developed bank erosion model. The results of this study provide insight into bank erosion prediction with Delft3D, and they suggest that the developed model will improve the performance of the Delft3D model for short- and long-term hydro-morphodynamic simulation of natural meandering rivers.
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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
The authors would like to thank The City of Calgary and the Natural Sciences and Engineering Research Council of Canada (Grant CRDJP 524502-18) for funding this project.
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© 2023 American Society of Civil Engineers.
History
Received: Jan 10, 2022
Accepted: May 17, 2023
Published online: Jul 24, 2023
Published in print: Oct 1, 2023
Discussion open until: Dec 24, 2023
ASCE Technical Topics:
- Computer programming
- Computer software
- Computing in civil engineering
- Engineering fundamentals
- Erosion
- Geology
- Geotechnical engineering
- Hydrologic models
- Meandering rivers and streams
- Model accuracy
- Models (by type)
- Physical models
- River bank stabilization
- River engineering
- Rivers and streams
- Simulation models
- Water and water resources
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