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.
Log On
About IAHRDirectoryCommitteesMy IAHRNews & JournalseLibraryeShopEventsJoin IAHRWorld CongressDonate
spacer.gif
spacer.gif eLibrary
spacer.gif eLibrary
You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 4: Responding to Shifting Water Resources : Negative surge in open channel: physical, numerical and analytical modelling
Negative surge in open channel: physical, numerical and analytical modelling
Author : M. Reichstetter1 and H.Chanson1
Negative surges are caused by a sudden change in flow resulting from a decrease in water depth. New experiments were conducted in a horizontal channel (L = 12 m, W = 0.5 m) to record the unsteady water depth and turbulence in negative surges. The data were collected using video imagery, acoustic displacement meters and acoustic Doppler velocimetry (ADV). The experimental setup was designed to record data at two different locations within the channel under controlled flow conditions. The detailed results are compared with an analytical solution and a numerical solution of the Saint-Venant equation. The results derived from the analytical solution of the Saint-Venant equations compare well to the surface elevation data recorded from the physical experiments. The numerical solution of the Saint-Venant equations accounting for some friction compared not as well as the analytical solution implying that the effects of bed friction were small.
File Size : 633,691 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 4: Responding to Shifting Water Resources
Date Published : 01/07/2011
Download Now