IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 5: Environmental Hydraulics and Hydrology : Studies on hydrodynamic erosion with soil protrusion apparatus
Studies on hydrodynamic erosion with soil protrusion apparatus
Author : Sarik Salim and Ravindra Jayaratne
The current paper discusses an extended investigation on the hydrodynamic behaviour of soil erosion under the fully controlled laboratory conditions studied in previous experiments (Jayaratne et al., 2010a, 2010b). The Ahlborn sediment mobile bed tank at the University of East London hydraulics laboratory was purposefully re-fabricated to install a Soil Protrusion Apparatus (SPA) for investigating sediment properties on soil erodibility (Jayaratne et al., 2010a). A plastic sediment bed was used to allow hydraulic measurements to be carried out with clear visual observation. An HD digital video camera was used to record the soil-hydrodynamic phenomena and digital images were analysed to obtain accurate measurements of the spreading area and volume with a computer aided design software. Extended physical modelling of crescent zones also included analysing their grain size distribution. Measured sediment and flow data were used to develop a simple empirical relationship for erosion rate for each crescent zone using dimensional analysis and best-fit techniques.
File Size : 2,238,307 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 5: Environmental Hydraulics and Hydrology
Date Published : 01/07/2011
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