Influence of a Central Jet on Isothermal and Reacting Swirling Flow in a Model Combustion Chamber

Egor V. Palkin, Mikhail Yu. Hrebtov, Darya A. Slastnaya, Rustam I. Mullyadzhanov, Luc Vervisch, Dmitriy K. Sharaborin, Aleksei S. Lobasov and Vladimir M. Dulin
Additional contact information
Egor V. Palkin: Institute of Thermophysics SB RAS, Lavrentyev Avenue 1, 630090 Novosibirsk, Russia
Mikhail Yu. Hrebtov: Institute of Thermophysics SB RAS, Lavrentyev Avenue 1, 630090 Novosibirsk, Russia
Darya A. Slastnaya: Institute of Thermophysics SB RAS, Lavrentyev Avenue 1, 630090 Novosibirsk, Russia
Rustam I. Mullyadzhanov: Institute of Thermophysics SB RAS, Lavrentyev Avenue 1, 630090 Novosibirsk, Russia
Luc Vervisch: INSA Rouen Normandie, CORIA UMR6614, 76801 Saint-Etienne-du-Rouvray, France
Dmitriy K. Sharaborin: Institute of Thermophysics SB RAS, Lavrentyev Avenue 1, 630090 Novosibirsk, Russia
Aleksei S. Lobasov: Institute of Thermophysics SB RAS, Lavrentyev Avenue 1, 630090 Novosibirsk, Russia
Vladimir M. Dulin: Institute of Thermophysics SB RAS, Lavrentyev Avenue 1, 630090 Novosibirsk, Russia

Energies, 2022, vol. 15, issue 5, 1-16

Abstract: We studied flow dynamics in a model combustion chamber using Large-eddy simulations (LES) and Particle image velocimetry (PIV) at the Reynolds number R e of 15,000. The swirl is produced using a Turbomeca swirler and air flow, while combustion is supported by a central methane/air jet. We compared four flow regimes, assessing the effect of the central jet for isothermal and lean reacting conditions. A detailed comparison for isothermal and reactive cases without the central jet is described, validating the LES results against PIV. We observe that unsteady dynamics are governed by global instability in the form of a well-known precessing vortex core (PVC). The central jet slightly changes the dynamics of PVC in the isothermal case where a strong recirculation zone is still formed. However, for the reacting case, the bubble is completely destroyed with no signs of strong vortical structures in the inner shear layer. These observations are confirmed using spectral analysis and proper orthogonal decomposition, describing the contribution of different flow modes in terms of azimuthal harmonics.

Keywords: swirling flow; combustion chamber; precessing vortex core; large-eddy simulation; particle image velocimetry (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/5/1615/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/5/1615/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:5:p:1615-:d:755473

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().