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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : 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(1), STEFAN ACHLEITNER(1) , DANIEL INNERHOFER(1) & MARKUS AUFLEGER(1)
ABSTRACT
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 : 876,074 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water engineering
Date Published : 19/08/2015
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