Open AccessExperimental analysis of the flow between stay and guide vanes of a pump-turbine in pumping mode
Author(s) -
André Luiz Amarante Mesquita,
Gabriel Dan Ciocan
Publication year - 1999
Publication title -
revista brasileira de ciências mecânicas
Language(s) - English
Resource type - Journals
ISSN - 0100-7386
DOI - 10.1590/s0100-73861999000400002
Subject(s) - turbine , flow (mathematics) , mechanics , mode (computer interface) , mechanical engineering , engineering , optics , computer science , physics , operating system
An experimental study was conducted in a pump-turbine model in pumping mode, in order to characterize the flow field structure in the region between stay and guide vanes, using mainly the laser-Doppler anemometry in a two-color and back-scattered light-based system. The structure of the steady and unsteady flow was analyzed. The measurements were performed at three operation points. The obtained data provide appropriate boundary conditions and a good base of validation for numerical codes, and for the understanding of main loss mechanisms of this complex flow