Abstract
The work is aimed at a detailed study of large-scale helical vortex structures emerging in a high turbulent intensively swirling flow. It was shown that the vortex formed in the chamber by installing diaphragm with shifted outlet is folded into a single-helical vortex. The flow visualization shows that although the vortex axis performs slow oscillations (precession), on average this structure is fixed in space. The velocity fields were measured with the aid of a nonintrusive method of flow diagnostics (PIV). Verification of the calculation results obtained using a LES simulation was performed based on measured experimental data to confirm the correctness of the chosen mathematical modelling approach. It has been asserted that the investigated regimes are in a self-similarity area relative to Reynolds number.
| Original language | English |
|---|---|
| Article number | 02025 |
| Journal | MATEC Web of Conferences |
| Volume | 115 |
| DOIs | |
| Publication status | Published - 10 Jul 2017 |
| Externally published | Yes |
| Event | 33rd Siberian Thermophysical Seminar, STS 2017 - Novosibirsk, Russian Federation Duration: 6 Jun 2017 → 8 Jun 2017 |
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ASJC Scopus subject areas
- Chemistry(all)
- Engineering(all)
- Materials Science(all)
Cite this
Investigation a single-spiral vortex in a swirl flow. / Gesheva, Elizaveta S.; Shtork, Sergey I.; Alekseenko, Sergey V.
In: MATEC Web of Conferences, Vol. 115, 02025, 10.07.2017.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - Investigation a single-spiral vortex in a swirl flow
AU - Gesheva, Elizaveta S.
AU - Shtork, Sergey I.
AU - Alekseenko, Sergey V.
PY - 2017/7/10
Y1 - 2017/7/10
N2 - The work is aimed at a detailed study of large-scale helical vortex structures emerging in a high turbulent intensively swirling flow. It was shown that the vortex formed in the chamber by installing diaphragm with shifted outlet is folded into a single-helical vortex. The flow visualization shows that although the vortex axis performs slow oscillations (precession), on average this structure is fixed in space. The velocity fields were measured with the aid of a nonintrusive method of flow diagnostics (PIV). Verification of the calculation results obtained using a LES simulation was performed based on measured experimental data to confirm the correctness of the chosen mathematical modelling approach. It has been asserted that the investigated regimes are in a self-similarity area relative to Reynolds number.
AB - The work is aimed at a detailed study of large-scale helical vortex structures emerging in a high turbulent intensively swirling flow. It was shown that the vortex formed in the chamber by installing diaphragm with shifted outlet is folded into a single-helical vortex. The flow visualization shows that although the vortex axis performs slow oscillations (precession), on average this structure is fixed in space. The velocity fields were measured with the aid of a nonintrusive method of flow diagnostics (PIV). Verification of the calculation results obtained using a LES simulation was performed based on measured experimental data to confirm the correctness of the chosen mathematical modelling approach. It has been asserted that the investigated regimes are in a self-similarity area relative to Reynolds number.
UR - http://www.scopus.com/inward/record.url?scp=85025446769&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85025446769&partnerID=8YFLogxK
U2 - 10.1051/matecconf/201711502025
DO - 10.1051/matecconf/201711502025
M3 - Conference article
VL - 115
JO - MATEC Web of Conferences
JF - MATEC Web of Conferences
SN - 2261-236X
M1 - 02025
ER -