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Coherent structures in the near field of swirling turbulent jets and flames investigated by PIV and PLIF. / Дулин, Владимир Михайлович; Лобасов, Алексей Сергеевич; Маркович, Дмитрий Маркович и др.

Swirling Flows and Flames. London : IntechOpen, 2018.

Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференцийглава/разделнаучнаяРецензирование

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APA

Vancouver

Дулин ВМ, Лобасов АС, Маркович ДМ, Алексеенко СВ. Coherent structures in the near field of swirling turbulent jets and flames investigated by PIV and PLIF. в Swirling Flows and Flames. London: IntechOpen. 2018 doi: 10.5772/intechopen.79896

Author

Дулин, Владимир Михайлович ; Лобасов, Алексей Сергеевич ; Маркович, Дмитрий Маркович и др. / Coherent structures in the near field of swirling turbulent jets and flames investigated by PIV and PLIF. Swirling Flows and Flames. London : IntechOpen, 2018.

BibTeX

@inbook{c18d2b7586d1428882d260349b6d69a1,
title = "Coherent structures in the near field of swirling turbulent jets and flames investigated by PIV and PLIF",
abstract = "The results of the experimental study of coherent flow structures in turbulent jets with different swirl rates are reported. The focus is placed on analysis of their impact on mixing of a passive scalar in the jets and on regular flame front deformations during combustion of fuel-lean and fuel-rich methane/air mixtures in case of a strongly swirling jet with vortex breakdown. The measurements are performed by applying simultaneously the particle image velocimetry (PIV) and planar laser-induced fluorescence (PLIF) techniques (acetone and HCHO for the nonreacting and reacting flows, respectively). The PIV data are processed by a proper orthogonal decomposition (POD), and the PLIF data are conditionally sampled according to the correlation coefficients of the velocity POD modes. The coherent velocity fluctuations are associated with regular patterns in the concentration fluctuation fields and flame front deformations. These patterns correspond to unsteady mixing by large-scale vortex structures in the outer mixing layer and also to variations of the entrainment rate for the flows with swirl.",
author = "Дулин, {Владимир Михайлович} and Лобасов, {Алексей Сергеевич} and Маркович, {Дмитрий Маркович} and Алексеенко, {Сергей Владимирович}",
year = "2018",
doi = "10.5772/intechopen.79896",
language = "English",
booktitle = "Swirling Flows and Flames",
publisher = "IntechOpen",
address = "United Kingdom",

}

RIS

TY - CHAP

T1 - Coherent structures in the near field of swirling turbulent jets and flames investigated by PIV and PLIF

AU - Дулин, Владимир Михайлович

AU - Лобасов, Алексей Сергеевич

AU - Маркович, Дмитрий Маркович

AU - Алексеенко, Сергей Владимирович

PY - 2018

Y1 - 2018

N2 - The results of the experimental study of coherent flow structures in turbulent jets with different swirl rates are reported. The focus is placed on analysis of their impact on mixing of a passive scalar in the jets and on regular flame front deformations during combustion of fuel-lean and fuel-rich methane/air mixtures in case of a strongly swirling jet with vortex breakdown. The measurements are performed by applying simultaneously the particle image velocimetry (PIV) and planar laser-induced fluorescence (PLIF) techniques (acetone and HCHO for the nonreacting and reacting flows, respectively). The PIV data are processed by a proper orthogonal decomposition (POD), and the PLIF data are conditionally sampled according to the correlation coefficients of the velocity POD modes. The coherent velocity fluctuations are associated with regular patterns in the concentration fluctuation fields and flame front deformations. These patterns correspond to unsteady mixing by large-scale vortex structures in the outer mixing layer and also to variations of the entrainment rate for the flows with swirl.

AB - The results of the experimental study of coherent flow structures in turbulent jets with different swirl rates are reported. The focus is placed on analysis of their impact on mixing of a passive scalar in the jets and on regular flame front deformations during combustion of fuel-lean and fuel-rich methane/air mixtures in case of a strongly swirling jet with vortex breakdown. The measurements are performed by applying simultaneously the particle image velocimetry (PIV) and planar laser-induced fluorescence (PLIF) techniques (acetone and HCHO for the nonreacting and reacting flows, respectively). The PIV data are processed by a proper orthogonal decomposition (POD), and the PLIF data are conditionally sampled according to the correlation coefficients of the velocity POD modes. The coherent velocity fluctuations are associated with regular patterns in the concentration fluctuation fields and flame front deformations. These patterns correspond to unsteady mixing by large-scale vortex structures in the outer mixing layer and also to variations of the entrainment rate for the flows with swirl.

U2 - 10.5772/intechopen.79896

DO - 10.5772/intechopen.79896

M3 - Chapter

BT - Swirling Flows and Flames

PB - IntechOpen

CY - London

ER -

ID: 19262905