Abstract
Prediction of flow in two-stage meandering channels for overbank flow was undertaken using a commercially available computer model. The software, TELEMAC-2D, solves the depth-averaged Navier–Stokes equations with non-structured grids for free surface flow. The model results are compared with the experimental data obtained from the UK Flood Channel Facility. Advection schemes offered in TELEMAC-2D are examined for their influence upon a bed friction coefficient. The effect of mesh resolution on solution accuracy is also investigated. The simulated distributions of depth-averaged velocity and boundary shear stress are also used to investigate the accuracy of the TELEMAC-2D prediction by comparison with the experimental data. The 1D and local Manning coefficients calculated using the experimental data are compared with the calibrated Manning coefficient. The results show that the choice of Manning coefficient is vital for an accurate prediction of overbank flow in two-stage meandering channels, and that transverse turbulence diffusion is not so significant.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Proceedings of the Institution of Civil Engineers - Water and Maritime Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
