Print Email Facebook Twitter A parameter study on bank shear stresses in curved open channel flow by means of large-eddy simulation Title A parameter study on bank shear stresses in curved open channel flow by means of large-eddy simulation Author Ottevanger, W. Blanckaert, K.J.F. Uijttewaal, W.S.J. Faculty Civil Engineering and Geosciences Department Hydraulic Engineering Date 2011-09-06 Abstract Meandering rivers and streams are a common planform in the world’s populated areas. Furthermore the recent increased focus on renaturalization projects has lead policy makers to also consider the partial remeandering of previously trained rivers. Economic factors such as navigation, man-made infrastructure and valuable farm land set the boundary conditions for such rivers. Understanding the behavior of the near bank flow in schematized open channel bends could help in understanding the behavior of meandering rivers and predict locations of potential damage, as well as aid in the development of design criteria of stable river banks. The interaction of the hydrodynamics with the bed and banks causes meandering river to change their course over time. Hickin and Nanson (1975) showed that the yearly migration rate in meandering rivers depends on the ratio of the river width to the radius of curvature B/R of a river bend. They showed that there is a peak migration rate at (B/R)max between 0.5 and 0.33. For milder curvature B/R < (B/R)max, but also for sharper curvature B/R > (B/R)max the yearly migration rate is lower. The explanation for this behavior is lacking. To reference this document use: http://resolver.tudelft.nl/uuid:e4418120-6c13-4bbc-ad91-55f6df2186e3 Publisher Tsinghua University Press ISBN 978-7-89444-548-3 Source RCEM 2011: Proceedings of the 7th IAHR Symposium of River, Coastal and Estuarine Morphodynamics, Beijing, China, 6-8 September 2011 Part of collection Institutional Repository Document type conference paper Rights (c) 2011 Tsinghua University PressThe Author(s) Files PDF 279776.pdf 785.43 KB Close viewer /islandora/object/uuid:e4418120-6c13-4bbc-ad91-55f6df2186e3/datastream/OBJ/view