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 7: Hydroinformatics : Three-dimensional numerical investigation of spillway and reservoir hydraulics
Three-dimensional numerical investigation of spillway and reservoir hydraulics
Author : R. Feurich, F. Kettner and N.R.B. Olsen
Knowing the maximum spillway capacity is important for the safety of dams and for flood prevention especially in the future, when it is believed that climatic change will cause higher flood events. The most common way for investigating the flow over spillways is done by physical model tests, either during planning phase or when modifying existing constructions. An alternative is 3D-numerical modelling which is gaining more and more significance. The authors of the current study performed numerical investigations using a commercial threedimensional code, applying the volume of fluid method for the complex free surface flow to calculate the flow field in a reservoir and at the weir gates.
The numerical results were compared with water level measurements from a physical model test conducted at the hydraulic laboratory at Trondheim. Additionally, the model was tested on a simplified flow expansion, testing the free surface capabilities for high Froude numbers. Reasonably good results were found, indicating that the chosen CFD program can be used for detailed studies of spillway and reservoir hydraulics.
File Size : 7,212,424 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 7: Hydroinformatics
Date Published : 01/07/2011
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