Abstract

In the present paper both steady and unsteady CFD analysis were performed to investigate the flow behavior in a bulb turbine. A study was carried out to assess the effect of runner tip and hub gap size on the turbine performance. Also special attention was paid to the turbine power break off at full load condition as well as the hysteresis phenomena on the turbine efficiency curve occurring in the same region. The unsteady calculations were performed only for some operating points of interest near the power break off region. The numerical results were compared with experimental data from the BulbT project.

Details

Title
CFD analysis of a bulb turbine and validation with measurements from the BulbT project
Author
Vu, T C 1 ; Gauthier, M 1 ; Nennemann, B 1 ; Wallimann, H 2 ; Deschênes, C 3 

 Andritz Hydro Ltd., 6100 Transcanadienne, Pointe Claire, QC. H9R 1B9, Canada 
 Andritz Hydro AG, Hardstrasse 319, 8021 Zürich, Switzerland 
 Laval University, 1065 Avenue de la Médecine, Québec, QC.G1V 0A6, Canada 
Publication year
2014
Publication date
Mar 2014
Publisher
IOP Publishing
ISSN
17551307
e-ISSN
17551315
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2534420663
Copyright
© 2014. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.