Abstract
The current study reports on spatial structure of a global mode of self-sustaining oscillations in a turbulent swirling jet under vortex breakdown conditions. Ensembles of 2D and 3D velocity fields were measured by stereoscopic and tomographic PIV systems, respectively, and were analysed via proper orthogonal decomposition. For the 2D PIV, the spatial resolution was sufficient to resolve most of the turbulent kinetic energy of the turbulent flow. The resolution in the case of tomographic PIV was lower, but the 3D instantaneous velocity fields unambiguously revealing that the global mode corresponds to a spiralling structure, counter-winded to the direction of the jet swirl.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF 2015 |
| Editors | Antonio Segalini |
| Publisher | Springer Science and Business Media, LLC |
| Pages | 43-50 |
| Number of pages | 8 |
| ISBN (Print) | 9783319306001 |
| DOIs | |
| Publication status | Published - 1 Jan 2016 |
| Externally published | Yes |
| Event | 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF2015 - Stockholm, Sweden Duration: 15 Jun 2015 → 18 Jun 2015 |
Publication series
| Name | Springer Proceedings in Physics |
|---|---|
| Volume | 185 |
| ISSN (Print) | 0930-8989 |
| ISSN (Electronic) | 1867-4941 |
Conference
| Conference | 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF2015 |
|---|---|
| Country | Sweden |
| City | Stockholm |
| Period | 15.6.15 → 18.6.15 |
Fingerprint
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Coherent structures in a turbulent swirling jet under vortex breakdown. 3D PIV measurements. / Alekseenko, Sergey V.; Dulin, Vladimir M.; Tokarev, M. P.; Markovich, Dmitriy M.
Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF 2015. ed. / Antonio Segalini. Springer Science and Business Media, LLC, 2016. p. 43-50 (Springer Proceedings in Physics; Vol. 185).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Coherent structures in a turbulent swirling jet under vortex breakdown. 3D PIV measurements
AU - Alekseenko, Sergey V.
AU - Dulin, Vladimir M.
AU - Tokarev, M. P.
AU - Markovich, Dmitriy M.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - The current study reports on spatial structure of a global mode of self-sustaining oscillations in a turbulent swirling jet under vortex breakdown conditions. Ensembles of 2D and 3D velocity fields were measured by stereoscopic and tomographic PIV systems, respectively, and were analysed via proper orthogonal decomposition. For the 2D PIV, the spatial resolution was sufficient to resolve most of the turbulent kinetic energy of the turbulent flow. The resolution in the case of tomographic PIV was lower, but the 3D instantaneous velocity fields unambiguously revealing that the global mode corresponds to a spiralling structure, counter-winded to the direction of the jet swirl.
AB - The current study reports on spatial structure of a global mode of self-sustaining oscillations in a turbulent swirling jet under vortex breakdown conditions. Ensembles of 2D and 3D velocity fields were measured by stereoscopic and tomographic PIV systems, respectively, and were analysed via proper orthogonal decomposition. For the 2D PIV, the spatial resolution was sufficient to resolve most of the turbulent kinetic energy of the turbulent flow. The resolution in the case of tomographic PIV was lower, but the 3D instantaneous velocity fields unambiguously revealing that the global mode corresponds to a spiralling structure, counter-winded to the direction of the jet swirl.
UR - http://www.scopus.com/inward/record.url?scp=84978938066&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84978938066&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-30602-5_6
DO - 10.1007/978-3-319-30602-5_6
M3 - Conference contribution
SN - 9783319306001
T3 - Springer Proceedings in Physics
SP - 43
EP - 50
BT - Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows, ICJWSF 2015
A2 - Segalini, Antonio
PB - Springer Science and Business Media, LLC
ER -