Experimental study of the effect of air injection on the pressure pulsations in the hydro turbine flow path under different operating conditions
Minakov, A. V.
Platonov, D. V.
Maslennikova, A. V.
Dekterev, D. A.
Институт инженерной физики и радиоэлектроники
Journal Name:MATEC Web Conf.
Journal Quartile in Scopus:без квартиля
Journal Quartile in Web of Science:без квартиля
Bibliographic Citation:Minakov, A. V. Experimental study of the effect of air injection on the pressure pulsations in the hydro turbine flow path under different operating conditions [Текст] / A. V. Minakov, D. V. Platonov, A. V. Maslennikova, D. A. Dekterev // MATEC Web Conf.: XXXIII Siberian Thermophysical Seminar (STS-33). — 2017. — Т. 115.
The paper presents an experimental study of oscillatory response in the Francis turbine of hydraulic unit. The experiment was performed on large-scale hydrodynamic test-bench with impeller diameter of 0.3 m. The effect of air injection on the intensity of pressure pulsations was studied at the different regimes in the hydraulic unit. It was revealed that air delivery into the flow path system of the turbine results in almost two-fold reduction of pressure pulsations, but for optimal regimes, there is an increase in pressure pulsations.