Perrig, A.Avellan, F.Farhat, M.2007-10-052007-10-052007-10-05200710.1115/FEDSM2007-37628https://infoscience.epfl.ch/handle/20.500.14299/12676WOS:000254289800027This paper deals with flow investigations using endoscopes in a single-injector reduced scale Pelton turbine performed with a CMOS high-speed camera. Both onboard and external visualizations techniques of the flow in a bucket are presented. The flow observations evidence the unsteadiness of the successive steps of jet/bucket interaction, free surface flow development and evolution throughout the bucket duty cycle.Free surface flowsWater jetPelton turbineHigh speed visualizationtext::conference output::conference proceedings::conference paper