000231250 001__ 231250
000231250 005__ 20190812210002.0
000231250 0247_ $$2doi$$a10.1088/1742-6596/813/1/012030
000231250 037__ $$aCONF
000231250 245__ $$aTransposition of Francis turbine cavitation compliance at partial load to different operating conditions
000231250 269__ $$a2017
000231250 260__ $$c2017
000231250 336__ $$aConference Papers
000231250 520__ $$aFrancis turbines operating in part load conditions experience a swirling flow at the runner outlet leading to the development of a precessing cavitation vortex rope in the draft tube. This cavitation vortex rope changes drastically the velocity of pressure waves traveling in the draft tube and may lead to resonance conditions in the hydraulic circuit. The wave speed being strongly related to the cavitation compliance, this research work presents a simple model to explain how it is affected by variations of operating conditions and proposes a method to transpose its values. Even though the focus of this paper is on transpositions within the same turbine scale, the methodology is also expected to be tested for the model to prototype transposition in the future. Comparisons between measurements and calculations are in good agreement.
000231250 700__ $$aGomes, J.
000231250 700__ $$aFavrel, A.
000231250 700__ $$aLandry, C.
000231250 700__ $$aNicolet, C.
000231250 700__ $$0241012$$g104417$$aAvellan, F.
000231250 7112_ $$dFebruary 2-3, 2017$$cPorto, Portugal$$aHYPERBOLE Conference
000231250 773__ $$j813$$tJournal of Physics: Conference Series$$k1$$q012030
000231250 909C0 $$xU10309$$pLMH$$0252135
000231250 909CO $$pconf$$pSTI$$ooai:infoscience.tind.io:231250
000231250 917Z8 $$x104417
000231250 937__ $$aEPFL-CONF-231250
000231250 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000231250 980__ $$aCONF