Print Email Facebook Twitter Stone stability under decelerating open-channel flow Title Stone stability under decelerating open-channel flow Author Hoan, N.T. Booij, R. Hofland, B. Stive, M.J.F. Verhagen, H.J. Faculty Civil Engineering and Geosciences Department Hydraulic Engineering Date 2007-06-01 Abstract The current research is aimed at finding a proper relation between flow forces acting on the bed and the bed response. To this end, experiments were carried out in which both the bed response (quantified by a dimensionless entrainment rate) and the flow field (velocity and turbulence intensity distributions) are measured. The three available stability parameters, which are used to quantify for the flow forces, were evaluated using the measured data. The focus of the evaluation is on the correlation of these stability parameters with the measured bed damage expressed in terms of the dimensionless entrainment rate. The experimental results confirm that the Shields stability parameter fails to predict bed damage for non-uniform flow conditions (R2=0.18). In contrast, the stability parameters of Jongeling et al. (2003) and Hofland (2005) give better damage predictions (R2 = 0.77). The results confirm the strong influence of the velocity and turbulence intensity distributions on the stability of bed material. Subject bed protectionstone stabilitydecelerating flowturbulenceShields To reference this document use: http://resolver.tudelft.nl/uuid:c241f58e-c948-4d59-9e9b-7134beafbfda Publisher World Scientific ISBN 9789814280990 Source Coastal Structures 2007: Proceedings of the 5th International Conference, Venice, Italy, 2-4 July 2007 Part of collection Institutional Repository Document type conference paper Rights © 2007 Hoan, N.T. Files PDF Cst07_paperHoan.pdf 245.83 KB Close viewer /islandora/object/uuid:c241f58e-c948-4d59-9e9b-7134beafbfda/datastream/OBJ/view