학술논문
Experimental observation of the precessing-vortex-core reconnection phenomenon in a combined-flow turbine.
Document Type
Article
Source
Subject
*TURBINES
*VORTEX motion
*HYDRODYNAMICS
*APERIODICITY
*WATER power
*PULSATION (Electronics)
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Language
ISSN
1063-7850
Abstract
Some results of experimental studies of the vortex-core reconnection phenomenon in the flowthrough duct of a combined-flow turbine were presented. The studies were performed on a medium-scale hydrodynamic test bench, the design of which was maximally similar to real hydroturbines. Using high-speed recording in a regime with a 75% load in a suction-pipe diffuser, the reconnection of a precessing vortex-core with detachment of vortex rings was observed. Aperiodic pressure surges due to the reconnection of a vortex and the formation of vortex rings were experimentally detected. [ABSTRACT FROM AUTHOR]