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.
Original language | English |
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Pages (from-to) | 465-477 |
Number of pages | 13 |
Journal | Heat Transfer Research |
Volume | 41 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Nov 2010 |
Externally published | Yes |
Keywords
- Axisymmetric vortex
- Gas-liquid flow
- Twisted flow
- Vortex precession
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanical Engineering
- Fluid Flow and Transfer Processes