000255265 001__ 255265
000255265 005__ 20190812210021.0
000255265 037__ $$aCONF
000255265 245__ $$aOnboard Flow Visualization in a Pelton Turbine Bucket
000255265 260__ $$c2006$$bInternational Association For Hydraulic Research
000255265 269__ $$a2006
000255265 300__ $$a13
000255265 336__ $$aConference Papers
000255265 490__ $$aPelton turbine$$vF236
000255265 520__ $$aFlow visualizations using endoscopes in a 21-bucket single-injector reduced scale Pelton turbine are performed for 2 operating points. 2 types of visualizations are performed with a CMOS high-speed camera: (i) an onboard visualization of the flow in the bucket relative frame of reference; (ii) an external visualization technique in the absolute frame of references. 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. The impact of the bucket cutout lips on the jet leads to a significant perturbations of the free surface of the jet, inducing an outburst due to probable compressible effects. The front of the jet appears not to follow the bucket surface, but to overfly it and disintegrates in several water threads. The end of the evacuation process evidences an important stratification of the flow, and a line of droplets is released from the cutout edges and the tip along the entire runner periphery due to the water saturated atmosphere prevailing in the casing.
000255265 542__ $$fCC BY
000255265 700__ $$g103048$$aPerrig, Alexandre$$0241011
000255265 700__ $$aValle, Mario
000255265 700__ $$aFahrat, Mohamed
000255265 700__ $$g106037$$aParkinson, Etienne$$0243998
000255265 700__ $$aFavre, Jean
000255265 700__ $$0241012$$aAvellan, François$$g104417
000255265 7112_ $$dOctober 17- 21, 2006$$c Yokohama, Japan$$a23rd IAHR Symposium on Hydraulic Machinery and Systems
000255265 773__ $$q1-13$$j1$$tProceedings of the 23rd IAHR Symposium on Hydraulic Machinery and Systems
000255265 8560_ $$femilie.reynaud@epfl.ch
000255265 8564_ $$uhttps://infoscience.epfl.ch/record/255265/files/Onboard%20Flow%20Visualization%20in%20a%20Pelton%20Turbine%20Bucket.pdf$$s3725784
000255265 8564_ $$xpdfa$$uhttps://infoscience.epfl.ch/record/255265/files/Onboard%20Flow%20Visualization%20in%20a%20Pelton%20Turbine%20Bucket.pdf?subformat=pdfa$$s4469432
000255265 909C0 $$xU10309$$pLMH$$mfrancois.avellan@epfl.ch$$0252135
000255265 909CO $$qGLOBAL_SET$$pconf$$pSTI$$ooai:infoscience.epfl.ch:255265
000255265 960__ $$aemilie.reynaud@epfl.ch
000255265 961__ $$alaurence.gauvin@epfl.ch
000255265 973__ $$aEPFL$$rREVIEWED
000255265 980__ $$aCONF
000255265 981__ $$aoverwrite