Abstract
The article presents the results of experimental investigation of swirling flow of lean propane/air flame in a model combustion chamber at atmospheric pressure. To study the unsteady turbulent flow, the particle image velocimetry technique was used. It was concluded that dynamics of high swirl flows with and without combustion was determined by a global helical mode, complying with a precessing double-spiral coherent vortex structure. The studied low swirl flame had similar size and stability characteristics, but amplitude of the coherent helical structure substantially oscillated in time. The oscillations were associated with intermittently appearing central recirculation zone that was absent in the nonreacting flow. It is expected that the low swirl flow without the permanent central recirculation zone should be more sensitive to an external active control. In particular, this result may be useful for suppression of thermoacoustic resonance in combustion chambers.
| Original language | English |
|---|---|
| Pages (from-to) | 679-686 |
| Number of pages | 8 |
| Journal | Thermophysics and Aeromechanics |
| Volume | 20 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1 Dec 2013 |
| Externally published | Yes |
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Keywords
- PIV
- swirling flames
- vortex core precession
ASJC Scopus subject areas
- Radiation
- Nuclear and High Energy Physics
Cite this
Study of vortex core precession in combustion chambers. / Alekseenko, S. V.; Markovich, D. M.; Dulin, V. M.; Chikishev, L. M.
In: Thermophysics and Aeromechanics, Vol. 20, No. 6, 01.12.2013, p. 679-686.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Study of vortex core precession in combustion chambers
AU - Alekseenko, S. V.
AU - Markovich, D. M.
AU - Dulin, V. M.
AU - Chikishev, L. M.
PY - 2013/12/1
Y1 - 2013/12/1
N2 - The article presents the results of experimental investigation of swirling flow of lean propane/air flame in a model combustion chamber at atmospheric pressure. To study the unsteady turbulent flow, the particle image velocimetry technique was used. It was concluded that dynamics of high swirl flows with and without combustion was determined by a global helical mode, complying with a precessing double-spiral coherent vortex structure. The studied low swirl flame had similar size and stability characteristics, but amplitude of the coherent helical structure substantially oscillated in time. The oscillations were associated with intermittently appearing central recirculation zone that was absent in the nonreacting flow. It is expected that the low swirl flow without the permanent central recirculation zone should be more sensitive to an external active control. In particular, this result may be useful for suppression of thermoacoustic resonance in combustion chambers.
AB - The article presents the results of experimental investigation of swirling flow of lean propane/air flame in a model combustion chamber at atmospheric pressure. To study the unsteady turbulent flow, the particle image velocimetry technique was used. It was concluded that dynamics of high swirl flows with and without combustion was determined by a global helical mode, complying with a precessing double-spiral coherent vortex structure. The studied low swirl flame had similar size and stability characteristics, but amplitude of the coherent helical structure substantially oscillated in time. The oscillations were associated with intermittently appearing central recirculation zone that was absent in the nonreacting flow. It is expected that the low swirl flow without the permanent central recirculation zone should be more sensitive to an external active control. In particular, this result may be useful for suppression of thermoacoustic resonance in combustion chambers.
KW - PIV
KW - swirling flames
KW - vortex core precession
UR - http://www.scopus.com/inward/record.url?scp=84897515904&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84897515904&partnerID=8YFLogxK
U2 - 10.1134/S0869864313060048
DO - 10.1134/S0869864313060048
M3 - Article
VL - 20
SP - 679
EP - 686
JO - Thermophysics and Aeromechanics
JF - Thermophysics and Aeromechanics
SN - 0869-8643
IS - 6
ER -