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 : 36th Congress - The Hague (2015) FULL PAPERS : THEME 4- WATER ENGINEERING : ADAPTED EVALUATION CRITERION FOR THE VELOCITY DISTRIBUTION IN FRONT OF TURBINES
ADAPTED EVALUATION CRITERION FOR THE VELOCITY DISTRIBUTION IN FRONT OF TURBINES
Author : ROMAN GABL , STEFAN ACHLEITNER , DANIEL INNERHOFER & MARKUS AUFLEGER
Most criteria for the evaluation of velocity distributions (VD) in front of turbines in river power plants are derived for the section of the trash rack. Hence, an optimization of the approaching flow behind this section cannot be evaluated. The paper shows the adaption of the existing and well know Fisher & Franke (F&F) criterion, which was published in 1987. As a first step, different theoretical VD in pipes are used to illustrate the need of the modification. Furthermore, simplified obstacles in front of the turbine are analyzed with 3D-numerical simulations (ANSYS-CFX), where the results can help to compare realistic VD with theoretical obstacles. Still, within a next step the influence on the energy production should be investigated. This 1:4 scale model test of a fully functional turbine in the laboratory is currently under investigation. With the help of this scale model test the adapted criterion should be evaluated.
File Size : 897,898 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) FULL PAPERS
Article : THEME 4- WATER ENGINEERING
Date Published : 19/04/2016
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