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 : 35th IAHR Congress - Chengdu (2013) : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT : Numerical Analysis of the Flushing Efficiency of an Alpine Reservoir
Numerical Analysis of the Flushing Efficiency of an Alpine Reservoir
Author : Gabriele Harb, Clemens Dorfmann, Hannes Badura and Josef Schneiderr
In this study a numerical analysis is carried out to investigate the flushing efficiency in an Alpine reservoir. The reservoir is approximately 4.5 km long with an initial storage volume of about 1.4 3 3 Mio. m . Measurements show that 85,000 m of sediments deposit in the reservoir annually. A small amount of the deposited sediments has been eroded and transported through the reservoir in former 3 flushing events. However, echo-soundings performed in 2009 showed that approximately 860,000 m of sediments are already deposited in the reservoir. This represents an annual sedimentation rate of about 6.1 % of the initial reservoir volume.Echo-soundings performed before and after the flushing event were used to evaluate the morphological changes. The water levels of the critical flood event (20-year flood) before and after the flushing event were modelled using a three dimensional numerical model to evaluate the changes in the water level at different sections. Additional ADCP measurements performed at the prototype were used to validate the computed velocity fields of the numerical model.
File Size : 969,002 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT
Date Published : 18/07/2016
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