D. V. Platonov, A. V. Minakov, D. A. Dekterev, A. V. Maslennikova, P. A. Kuibin, “Experimental observation of the precessing-vortex-core reconnection phenomenon in a combined-flow turbine”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 2017, Volume 43, Issue 21,Pages <nobr>33

This article is cited in 7 papers

Experimental observation of the precessing-vortex-core reconnection phenomenon in a combined-flow turbine

D. V. Platonov^ab, A. V. Minakov^ab, D. A. Dekterev^ab, A. V. Maslennikova^c, P. A. Kuibin^b

^a Siberian Federal University, Krasnoyarsk
^b Institute of Thermophysics, Siberian Division of the Russian Academy of Sciences
^c Siberian Federal University, Sayano-Shushensky Branch, Sayanogorsk, Republic of Khakassia, Russia

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.

Received: 27.03.2017

DOI: 10.21883/PJTF.2017.21.45159.16794