Pressure measurements and high speed visualizations of the cavitation phenomena at deep part load condition in a Francis turbine

K. Yamamoto, A. Müller, A. Favrel, C. Landry, F. Avellan

Research output: Contribution to journalConference articlepeer-review

13 Citations (Scopus)

Abstract

In a hydraulic power plant, it is essential to provide a reliable, sustainable and flexible energy supply. In recent years, in order to cover the variations of the renewable electricity production, hydraulic power plants are demanded to operate with more extended operating range. Under these off-design conditions, a hydraulic turbine is subject to cavitating swirl flow at the runner outlet. It is well-known that the helically/symmetrically shaped cavitation develops at the runner outlet in part load/full load condition, and it gives severe damage to the hydraulic systems under certain conditions. Although there have been many studies about partial and full load conditions, contributions reporting the deep part load condition are limited, and the cavitation behaviour at this condition is not yet understood. This study aims to unveil the cavitation phenomena at deep part load condition by high speed visualizations focusing on the draft tube cone as well as the runner blade channel, and pressure fluctuations associated with the phenomena were also investigated.

Original languageEnglish
Article number022011
JournalIOP Conference Series: Earth and Environmental Science
Volume22
DOIs
Publication statusPublished - 2014
Event27th IAHR Symposium on Hydraulic Machinery and Systems, IAHR 2014 - Montreal, Canada
Duration: 2014 Sep 222014 Sep 26

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Fingerprint Dive into the research topics of 'Pressure measurements and high speed visualizations of the cavitation phenomena at deep part load condition in a Francis turbine'. Together they form a unique fingerprint.

Cite this