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Wall Friction Measurements: Application in a Francis Turbine Cone

[+] Author Affiliations
Gabriel Dan Ciocan, François Avellan, Elena Lavinia Berca

Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland

Paper No. FEDSM2002-31333, pp. 317-322; 6 pages
doi:10.1115/FEDSM2002-31333
From:
  • ASME 2002 Joint U.S.-European Fluids Engineering Division Conference
  • Volume 1: Fora, Parts A and B
  • Montreal, Quebec, Canada, July 14–18, 2002
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3615-0 | eISBN: 0-7918-3600-2
  • Copyright © 2002 by ASME

abstract

The boundary layers at a turbine runner outlet and their evolution with the operating points are unknown and represent an important factor for the pressure recovery of the elbow diffuser. To characterize the boundary layer, a hot film probe is used. The measurement accuracy is an important aspect of this study and the measurement procedure is exposed. An experimental campaign is realized in a turbine cone in order to characterize the wall friction evolution for 4 operating points. Both steady and transient analysis of the experimental results are presented.

Copyright © 2002 by ASME

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