Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Self-oscillations in a jet flow and gaseous flame with strong swirl. / Abdurakipov, S. S.; Dulin, V. M.; Markovich, D. M.
в: Thermophysics and Aeromechanics, Том 25, № 3, 01.05.2018, стр. 379-386.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Self-oscillations in a jet flow and gaseous flame with strong swirl
AU - Abdurakipov, S. S.
AU - Dulin, V. M.
AU - Markovich, D. M.
N1 - Publisher Copyright: © 2018, Pleiades Publishing, Ltd.
PY - 2018/5/1
Y1 - 2018/5/1
N2 - Investigation results on unsteady flow dynamics in a gaseous jet flame with strong swirl, vortex breakdown, and precession of a vortex core obtained by panoramic optical methods are presented, as well as the results of theoretical analysis of the fastest growing modes of hydrodynamic instability. Characteristics of the most unstable self-oscillating mode in the initial region of the turbulent strongly swirling propane-air jet burning in the atmospheric air in the form of a lifted flame are determined. Analysis of data by principal component analysis and linear stability analysis revealed that evolution of the dominant self-oscillating mode corresponds to quasi-solid rotation with constant angular velocity of the spatial coherent structure consisting of a jet spiral vortex core and two spiral secondary vortices.
AB - Investigation results on unsteady flow dynamics in a gaseous jet flame with strong swirl, vortex breakdown, and precession of a vortex core obtained by panoramic optical methods are presented, as well as the results of theoretical analysis of the fastest growing modes of hydrodynamic instability. Characteristics of the most unstable self-oscillating mode in the initial region of the turbulent strongly swirling propane-air jet burning in the atmospheric air in the form of a lifted flame are determined. Analysis of data by principal component analysis and linear stability analysis revealed that evolution of the dominant self-oscillating mode corresponds to quasi-solid rotation with constant angular velocity of the spatial coherent structure consisting of a jet spiral vortex core and two spiral secondary vortices.
KW - coherent structures
KW - precession of vortex core
KW - self-oscillations
KW - swirling flame
KW - swirling jet
UR - http://www.scopus.com/inward/record.url?scp=85051775617&partnerID=8YFLogxK
U2 - 10.1134/S086986431803006X
DO - 10.1134/S086986431803006X
M3 - Article
AN - SCOPUS:85051775617
VL - 25
SP - 379
EP - 386
JO - Thermophysics and Aeromechanics
JF - Thermophysics and Aeromechanics
SN - 0869-8643
IS - 3
ER -
ID: 16081338