Experimental Study and Numerical Simulation of Cavity Oscillation in a Diffuser with Swirling Flow

Changkun Chen; Christophe Nicolet; Koichi Yonezawa; Mohamed Farhat; Francois Avellan; Kazuyoshi Miyagawa; Yoshinobu Tsujimoto

doi:10.5293/IJFMS.2010.3.1.080

Original Papers

Experimental Study and Numerical Simulation of Cavity Oscillation in a Diffuser with Swirling Flow

Changkun Chen, Christophe Nicolet, Koichi Yonezawa, Mohamed Farhat, Francois Avellan, Kazuyoshi Miyagawa, Yoshinobu Tsujimoto

Author information

Keywords: Draft tube surge, diffuser effect, swirl effect, cavitation

JOURNAL FREE ACCESS

2010 Volume 3 Issue 1 Pages 80-90

DOI https://doi.org/10.5293/IJFMS.2010.3.1.080

Details

Abstract

The cavity oscillation with swirling flow in hydraulic power generating systems was studied by a simple experiment and numerical simulation. Several types of fluctuation were observed in the experiment, including the cavitation surge caused by the diffuser effect and the vortex precession by the swirling flow. Both cavitation surge and vortex precession were simulated by CFD. Detailed flow structure was examined through flow visualization and CFD.

Corresponding author

Register with J-STAGE for free!