000197918 001__ 197918
000197918 005__ 20181203023449.0
000197918 0247_ $$2doi$$a10.1080/00221686.2013.854847
000197918 022__ $$a1814-2079
000197918 02470 $$2ISI$$a000337972300010
000197918 037__ $$aARTICLE
000197918 245__ $$aCavitation surge modelling in Francis turbine draft tube
000197918 260__ $$bTaylor & Francis Ltd$$c2014$$aAbingdon
000197918 269__ $$a2014
000197918 300__ $$a13
000197918 336__ $$aJournal Articles
000197918 520__ $$aFrancis turbines may experience cavitation surge phenomenon in the draft tube inducing large pressure fluctuations which can jeopardize the hydraulic system integrity. To predict this phenomenon, a one-dimensional draft tube model is derived from flow momentum and continuity equations including the convective terms that are not considered in the existing models. A parametric analysis of the draft tube model is carried out to investigate the influence of parameters on the cavitation surge onset identified by the hydraulic system stability. It is shown that convective terms have a stabilizing influence modifying stability limit prediction driven by the divergent geometry modelling of the draft tube.
000197918 6531_ $$aCavitation
000197918 6531_ $$aflow instabilities
000197918 6531_ $$aFrancis turbine
000197918 6531_ $$aone-dimensional models
000197918 6531_ $$arotating and swirling flows
000197918 6531_ $$avortex rope
000197918 700__ $$0243097$$g178059$$aAlligne, Sébastien
000197918 700__ $$aNicolet, Christophe
000197918 700__ $$aTsujimoto, Yoshinobu
000197918 700__ $$aAvellan, François$$g104417$$0241012
000197918 773__ $$tJournal of Hydraulic Research$$q1-13
000197918 909C0 $$xU10309$$0252135$$pLMH
000197918 909CO $$pSTI$$particle$$ooai:infoscience.tind.io:197918
000197918 917Z8 $$x104417
000197918 937__ $$aEPFL-ARTICLE-197918
000197918 973__ $$rNON-REVIEWED$$sPUBLISHED$$aEPFL
000197918 980__ $$aARTICLE