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Paper No. 5
Presentation Time: 9:00 AM-6:00 PM

NONLINEAR SIMULATION OF MEANDER EVOLUTION


CHEN, Dong, Institute of Geographic Sciences, Chinese Academy of Sciences, No. 11A, Datun RD, Chaoyang District, Beijing, 100101, China, ZHANG, Yun, Department of Civil and Environmental Engineering, Stanford University, Stanford, CA 94305 and OTTEVANGER, Willem, Department of Civil Engineering and Geosciences, Delft University of Technology, Delft, 5048, Netherlands, dchen@igsnrr.ac.cn

Evolution of meanders, a complex morpho-dynamic process, has been the focus of research challenging river engineers for decades. The study replicates the natural evolution of meandering processes by coupling the Bank Erosion and Retreat Model (BERM, by Chen and Duan) with a nonlinear flow model (by Blanckaert and de Vriend). Distinguished from our previous meander evolution model which adopted the first-order analytical solution of flow field in a sine-generated channel (by Johannesson and Parker), the present model is applicable to any channel planforms and more suitable for moderately and strongly curved flows. The computed results demonstrate the improvement of simulation of meander evolution by adopting the advanced hydrodynamic model.

Session No. 166

T23. Landscape Dynamics: Gullies and Rivers (Posters)
Tuesday, 6 November 2012: 9:00 AM-6:00 PM
Hall B (Charlotte Convention Center)
Geological Society of America Abstracts with Programs. Vol. 44, No. 7, p.416
© Copyright 2012 The Geological Society of America (GSA), all rights reserved. Permission is hereby granted to the author(s) of this abstract to reproduce and distribute it freely, for noncommercial purposes. Permission is hereby granted to any individual scientist to download a single copy of this electronic file and reproduce up to 20 paper copies for noncommercial purposes advancing science and education, including classroom use, providing all reproductions include the complete content shown here, including the author information. All other forms of reproduction and/or transmittal are prohibited without written permission from GSA Copyright Permissions.
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