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.
Wall Friction Measurements: Application in a Francis Turbine Cone
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Ciocan, GD, Avellan, F, & Berca, EL. "Wall Friction Measurements: Application in a Francis Turbine Cone." Proceedings of the ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. Volume 1: Fora, Parts A and B. Montreal, Quebec, Canada. July 14–18, 2002. pp. 317-322. ASME. https://doi.org/10.1115/FEDSM2002-31333
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