Cavitation control on a 2D hydrofoil through a continuous tangential injection of liquid: Experimental study

M. V. Timoshevskiy, I. I. Zapryagaev, K. S. Pervunin, D. M. Markovich

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

In the paper, the possibility of active control of a cavitating flow over a 2D hydrofoil that replicates a scaled-down model of high-pressure hydroturbine guide vane (GV) was tested. The flow manipulation was implemented by a continuous tangential liquid injection at different flow rates through a spanwise slot in the foil surface. In experiments, the hydrofoil was placed in the test channel at the attack angle of 9°. Different cavitation conditions were reached by varying the cavitation number and injection velocity. In order to study time dynamics and spatial patterns of partial cavities, high-speed imaging was employed. A PIV method was used to measure the mean and fluctuating velocity fields over the hydrofoil. Hydroacoustic measurements were carried out by means of a pressure transducer to identify spectral characteristics of the cavitating flow. It was found that the present control technique is able to modify the partial cavity pattern (or even totally suppress cavitation) in case of stable sheet cavitation and change the amplitude of pressure pulsations at unsteady regimes. The injection technique makes it also possible to significantly influence the spatial distributions of the mean velocity and its turbulent fluctuations over the GV section for non-cavitating flow and sheet cavitation.

Original languageEnglish
Title of host publicationInternational Conference on the Methods of Aerophysical Research, ICMAR 2016: Proceedings of the 18th International Conference on the Methods of Aerophysical Research
Subtitle of host publicationProceedings of the 18th International Conference on the Methods of Aerophysical Research
PublisherAmerican Institute of Physics Inc.
Volume1770
ISBN (Electronic)9780735414280
DOIs
Publication statusPublished - 13 Oct 2016
Event18th International Conference on the Methods of Aerophysical Research, ICMAR 2016 - Perm, Russian Federation
Duration: 27 Jun 20163 Jul 2016

Conference

Conference18th International Conference on the Methods of Aerophysical Research, ICMAR 2016
CountryRussian Federation
CityPerm
Period27.6.163.7.16

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Cavitation control on a 2D hydrofoil through a continuous tangential injection of liquid: Experimental study'. Together they form a unique fingerprint.

Cite this