Результаты исследований: Научные публикации в периодических изданиях › статья по материалам конференции › Рецензирование
Symmetry breaking in annular jets with different blockage ratio. / Ryzhenkov, V. O.; Mullyadzhanov, R. I.
в: Journal of Physics: Conference Series, Том 1677, № 1, 012028, 03.12.2020.Результаты исследований: Научные публикации в периодических изданиях › статья по материалам конференции › Рецензирование
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TY - JOUR
T1 - Symmetry breaking in annular jets with different blockage ratio
AU - Ryzhenkov, V. O.
AU - Mullyadzhanov, R. I.
N1 - Publisher Copyright: © Published under licence by IOP Publishing Ltd. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/12/3
Y1 - 2020/12/3
N2 - We perform direct numerical simulations of the annular laminar jet flows for two inner-to-outer diameter (blockage) ratios br = d / D = 0.5, 0.9 in the range of the Reynolds number based on the bulk velocity inside the nozzle and its outer diameter Re = 200 - 400. In spite of the axisymmetric formulation, asymmetric states are observed for moderate and high Re. A gradual increase of the Reynolds number allow building a regime map. The symmetry-asymmetry transition Reynolds number decreases with the increase of br, while the steady-unsteady transition Reynolds numbers are close for both br. The degree of asymmetry increases with the increase of Re, leading to a shift of the global stagnation point from the axis of symmetry.
AB - We perform direct numerical simulations of the annular laminar jet flows for two inner-to-outer diameter (blockage) ratios br = d / D = 0.5, 0.9 in the range of the Reynolds number based on the bulk velocity inside the nozzle and its outer diameter Re = 200 - 400. In spite of the axisymmetric formulation, asymmetric states are observed for moderate and high Re. A gradual increase of the Reynolds number allow building a regime map. The symmetry-asymmetry transition Reynolds number decreases with the increase of br, while the steady-unsteady transition Reynolds numbers are close for both br. The degree of asymmetry increases with the increase of Re, leading to a shift of the global stagnation point from the axis of symmetry.
UR - http://www.scopus.com/inward/record.url?scp=85097353584&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1677/1/012028
DO - 10.1088/1742-6596/1677/1/012028
M3 - Conference article
AN - SCOPUS:85097353584
VL - 1677
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012028
T2 - 36th Siberian Thermophysical Seminar, STS 2020
Y2 - 5 October 2020 through 7 October 2020
ER -
ID: 27069301