Print Email Facebook Twitter Rock and roll: Turbulence-induced damage to granular bed protections Title Rock and roll: Turbulence-induced damage to granular bed protections Author Hofland, B. Contributor Battjes, J.A. (promotor) d'Angremond, K. (promotor) Faculty Civil Engineering and Geosciences Date 2005-12-06 Abstract Layers of stone or rock are often applied around hydraulic structures to protect the sand bed from scouring. Determining the size of the rocks is complicated by the fact that the flow over a bed protection usually is non-uniform. This thesis describes two experimental series in which the stability of a single stone under non-uniform flows is studied in detail. From these experiments more understanding in the process of damage to bed protections is obtained. It is seen that besides the classical form drag, also small-scale accelerations in the flow attribute to the stone movement. In the last chapter a new stability model is developed for practical use. Subject turbulencebed protectionbed stabilitypivbackward-facing stepturbulence wall pressures To reference this document use: http://resolver.tudelft.nl/uuid:90796c07-7666-4550-b73b-2b8f70057768 ISBN 90-902-0122-X Part of collection Institutional Repository Document type doctoral thesis Rights (c) 2005 B. Hofland Files PDF ceg_hofland_20051206.pdf 14.8 MB Close viewer /islandora/object/uuid:90796c07-7666-4550-b73b-2b8f70057768/datastream/OBJ/view