Research output: Contribution to journal › Conference article › peer-review
Large-eddy simulations of the near field of a swirling turbulent annular jet. / Ryzhenkov, V.; Mullyadzhanov, R.
In: Journal of Physics: Conference Series, Vol. 980, No. 1, 012020, 19.03.2018.Research output: Contribution to journal › Conference article › peer-review
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TY - JOUR
T1 - Large-eddy simulations of the near field of a swirling turbulent annular jet
AU - Ryzhenkov, V.
AU - Mullyadzhanov, R.
N1 - Publisher Copyright: © Published under licence by IOP Publishing Ltd.
PY - 2018/3/19
Y1 - 2018/3/19
N2 - We perform Large-eddy simulations of an annular swirling turbulent jet for S = 0, S = 0.3 and S = 1, where S is swirl number. The Reynolds number based on the bulk velocity in the feeding channel and the outer diameter was 8900. The analysis showed that the region around the stagnation point in the end of the recirculation zone has a high level of turbulent kinetic energy. The length of the recirculation zone decreases in case for low swirl (S = 0.3) compared to the non-rotating case, while for the higher rotation rate (S = 1) the recirculation bubble becomes enormously long. Spectral analysis showed two peaks corresponding to the Kelvin-Helmholtz instability and some low-frequency oscillations of the recirculating zone.
AB - We perform Large-eddy simulations of an annular swirling turbulent jet for S = 0, S = 0.3 and S = 1, where S is swirl number. The Reynolds number based on the bulk velocity in the feeding channel and the outer diameter was 8900. The analysis showed that the region around the stagnation point in the end of the recirculation zone has a high level of turbulent kinetic energy. The length of the recirculation zone decreases in case for low swirl (S = 0.3) compared to the non-rotating case, while for the higher rotation rate (S = 1) the recirculation bubble becomes enormously long. Spectral analysis showed two peaks corresponding to the Kelvin-Helmholtz instability and some low-frequency oscillations of the recirculating zone.
KW - COHERENT STRUCTURES
KW - VORTEX BREAKDOWN
KW - FLOW
KW - REGION
KW - WAKE
UR - http://www.scopus.com/inward/record.url?scp=85045928377&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/980/1/012020
DO - 10.1088/1742-6596/980/1/012020
M3 - Conference article
AN - SCOPUS:85045928377
VL - 980
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012020
T2 - 6th International Conference on Heat and Mass Transfer and Hydrodynamics in Swirling Flows
Y2 - 21 November 2017 through 23 November 2017
ER -
ID: 12843316