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ISSN 打印: 1064-2285
ISSN 在线: 2162-6561

传热学

DOI: 10.1615/HeatTransRes.v41.i4.80
pages 465-478

Vortex Precession in a Gas-Liquid Flow

Sergey Alekseenko
Kutateladze Institute of Thermophysics SB RAS, Lavrentyev Ave. 1, 630090, Novosibirsk, Russia; Department of Physics, Novosibirsk State University
P. A. Kuibin
S. S. Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, 1 Academician Lavrentiev Ave., Novosibirsk, 630090, Russia
V. L. Okulov
Technical University of Denmark, Department of Wind Energy, 2800 Kgs Lyngby, Denmark; S. S. Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Sergei I. Shtork
S. S. Kutateladze Institute of Thermal Physics, Siberian Branch of the Russian Academy of Sciences, 1 Academician Lavrent'ev Ave., Novosibirsk, 630090, Russia

ABSTRACT

The work is devoted to experimental investigation of the influence of a gas phase on the self-oscillating regime with the vortex core precession occurring in a twisted flow in the case of a helical type of the decomposition of an axisymmetric vortex. Investigations of the frequency of vortex precession and of the full pressure drop over the test section of a vortex chamber depending on the liquid flow rate and gas content were carried out. The relations obtained reveal a number of interesting effects that reflect the specific features in the behavior of precessing vortices with a gas core. These investigations are important, for example, for controlling resonance oscillations occurring in hydroturbines.


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