New insight in Francis turbine cavitation vortex rope: role of the runner outlet flow swirl number

At part load operation, Francis turbines experience the development of a cavitation vortex rope in the draft tube, whose precession acts as a pressure excitation source. In case of resonance, the resulting pressure pulsations lead to unacceptable torque and power fluctuations on the prototype machin...

Full description

Saved in:

Bibliographic Details
Published in:	Journal of hydraulic research Vol. 56; no. 3; pp. 367 - 379
Main Authors:	Favrel, Arthur, Gomes Pereira Junior, Joao, Landry, Christian, Müller, Andres, Nicolet, Christophe, Avellan, François
Format:	Journal Article
Language:	English
Published:	Madrid Taylor & Francis 04.05.2018 Taylor & Francis Ltd
Subjects:	Cavitation Cavitation flow Cavitation number Computational fluid dynamics Empirical analysis Fluid flow Francis turbine hydro-acoustic resonance Mathematical models Modelling Outlet flow Parameters part load Precession Pressure Prototypes Resonance Resonant frequencies Resonant frequency Rope Scale (ratio) Stability swirl number Systems stability Torque Turbine engines Turbines vortex rope Vortices
ISSN:	0022-1686, 1814-2079
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Be the first to leave a comment!