Abstract
The turbulent structure of a submerged axisymmetric impinging jet containing small gas bubbles is studied experimentally under conditions of periodic external excitation. On the basis of measuring the surface-friction pulsatory component in the jet impinging on an obstacle, the effect of the suppression of large-scale eddies at large gas volume fractions is registered. The conditions of resonant growth of coherent structures and the suppression of wide-band turbulence are determined for both the single-phase and the two-phase impinging jet. An analysis of the development of different pulsatory friction components in the impinging-jet gradient region is presented.
Original language | English |
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Pages (from-to) | 22-33 |
Number of pages | 12 |
Journal | Fluid Dynamics |
Volume | 37 |
Issue number | 5 |
Publication status | Published - 1 Jan 2002 |
Externally published | Yes |
Keywords
- Coherent structures
- Gas-liquid
- Submerged impinging jet
- Turbulence
ASJC Scopus subject areas
- Mechanical Engineering
- Physics and Astronomy(all)
- Fluid Flow and Transfer Processes