000139263 001__ 139263
000139263 005__ 20190316234602.0
000139263 0247_ $$2doi$$a10.1115/1.2813052
000139263 02470 $$2DAR$$a12130
000139263 02470 $$2ISI$$a000253018400005
000139263 037__ $$aARTICLE
000139263 245__ $$aAnalysis of the Cavitating Draft Tube Vortex in a Francis Turbine Using Particle Image Velocimetry Measurements in Two-Phase Flow
000139263 269__ $$a2008
000139263 260__ $$c2008
000139263 336__ $$aJournal Articles
000139263 520__ $$aPartial flow rate operation of hydroturbines with constant pitch blades causes complex unstable cavitating flow in the diffuser cone. A particle image velocimetry (PIV) system allows investigating the flow velocity field in the case of a developing cavitation vortex, the so-called vortex rope, at the outlet of a Francis turbine runner. The synchronization of the PIV flow survey with the rope precession allows applying the ensemble averaging by phase technique to extract both the periodic velocity components and the rope shape. The influence of the turbine setting evel on the volume of the cavity rope and its centerline is investigated, providing a physical knowledge about the hydrodynamic complex phenomena involved in the development of the cavitation rope in Francis turbine operating regimes.
000139263 700__ $$aIliescu, Monica Sanda
000139263 700__ $$0243997$$g118834$$aDan Ciocan, Gabriel
000139263 700__ $$0241012$$g104417$$aAvellan, François
000139263 773__ $$j130$$tJournal of Fluids Engineering$$q021105
000139263 8564_ $$uhttps://infoscience.epfl.ch/record/139263/files/Analysis%20of%20the%20Cavitating%20Draft%20Tube%20Vortex%20in%20a%20Francis%20Turbine%20Using%20Particle%20Image%20Velocimetry%20Measurements%20in%20Two-Phase%20Flow.pdf$$zn/a$$s1794341
000139263 909C0 $$xU10309$$0252135$$pLMH
000139263 909CO $$qGLOBAL_SET$$pSTI$$ooai:infoscience.tind.io:139263$$particle
000139263 937__ $$aLMH-ARTICLE-2009-011
000139263 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000139263 980__ $$aARTICLE