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On coherent structures and heat transfer in strongly swirling impinging jets. / Abdurakipov, S.; Sharaborin, D.

In: Journal of Physics: Conference Series, Vol. 1677, No. 1, 012002, 03.12.2020.

Research output: Contribution to journal › Conference article › peer-review

Harvard

Abdurakipov, S & Sharaborin, D 2020, 'On coherent structures and heat transfer in strongly swirling impinging jets', Journal of Physics: Conference Series, vol. 1677, no. 1, 012002. https://doi.org/10.1088/1742-6596/1677/1/012002

APA

Abdurakipov, S., & Sharaborin, D. (2020). On coherent structures and heat transfer in strongly swirling impinging jets. Journal of Physics: Conference Series, 1677(1), [012002]. https://doi.org/10.1088/1742-6596/1677/1/012002

Vancouver

Abdurakipov S, Sharaborin D. On coherent structures and heat transfer in strongly swirling impinging jets. Journal of Physics: Conference Series. 2020 Dec 3;1677(1):012002. doi: 10.1088/1742-6596/1677/1/012002

Author

Abdurakipov, S. ; Sharaborin, D. / On coherent structures and heat transfer in strongly swirling impinging jets. In: Journal of Physics: Conference Series. 2020 ; Vol. 1677, No. 1.

BibTeX

@article{b2cb5577f0cd4cdba09a22b211018567,
title = "On coherent structures and heat transfer in strongly swirling impinging jets",
abstract = "This work is devoted to the experimental study of coherent structures in swirling jets flowing onto a heated surface. To measure the velocity fields with a high acquisition rate of 3.5 kHz Stereo Particle Image Velocimetry (PIV) measurement system is used. Simultaneously with PIV measurements, the temperature of the heated surface is measured by high-speed thermometry. The experiments are carried out for three different cases of swirling and two distances from the nozzle to the impingement surface. It is shown that only in the case of strongly swirling jet breakdown of vortex core and bubble-type recirculation zone appear. In this flow regime, large-scale vortex structures of spiral shape are found. The contribution of coherent structures to the fluctuations of velocity and temperature is analyzed for a strongly swirling jet by using Spectral Proper Orthogonal Decomposition (SPOD) method and spatial Fourier transform. It is found that the strongly swirling jet for H/d = 1 provides most effective overall cooling of the surface for the considered flow configurations.",
author = "S. Abdurakipov and D. Sharaborin",
note = "Funding Information: This work is financially supported by the Russian Foundation for Basic Research, grant number 20-08-01093. Publisher Copyright: {\textcopyright} Published under licence by IOP Publishing Ltd. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; 36th Siberian Thermophysical Seminar, STS 2020 ; Conference date: 05-10-2020 Through 07-10-2020",
year = "2020",
month = dec,
day = "3",
doi = "10.1088/1742-6596/1677/1/012002",
language = "English",
volume = "1677",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "IOP Publishing Ltd.",
number = "1",

}

RIS

TY - JOUR

T1 - On coherent structures and heat transfer in strongly swirling impinging jets

AU - Abdurakipov, S.

AU - Sharaborin, D.

N1 - Funding Information: This work is financially supported by the Russian Foundation for Basic Research, grant number 20-08-01093. 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 - This work is devoted to the experimental study of coherent structures in swirling jets flowing onto a heated surface. To measure the velocity fields with a high acquisition rate of 3.5 kHz Stereo Particle Image Velocimetry (PIV) measurement system is used. Simultaneously with PIV measurements, the temperature of the heated surface is measured by high-speed thermometry. The experiments are carried out for three different cases of swirling and two distances from the nozzle to the impingement surface. It is shown that only in the case of strongly swirling jet breakdown of vortex core and bubble-type recirculation zone appear. In this flow regime, large-scale vortex structures of spiral shape are found. The contribution of coherent structures to the fluctuations of velocity and temperature is analyzed for a strongly swirling jet by using Spectral Proper Orthogonal Decomposition (SPOD) method and spatial Fourier transform. It is found that the strongly swirling jet for H/d = 1 provides most effective overall cooling of the surface for the considered flow configurations.

AB - This work is devoted to the experimental study of coherent structures in swirling jets flowing onto a heated surface. To measure the velocity fields with a high acquisition rate of 3.5 kHz Stereo Particle Image Velocimetry (PIV) measurement system is used. Simultaneously with PIV measurements, the temperature of the heated surface is measured by high-speed thermometry. The experiments are carried out for three different cases of swirling and two distances from the nozzle to the impingement surface. It is shown that only in the case of strongly swirling jet breakdown of vortex core and bubble-type recirculation zone appear. In this flow regime, large-scale vortex structures of spiral shape are found. The contribution of coherent structures to the fluctuations of velocity and temperature is analyzed for a strongly swirling jet by using Spectral Proper Orthogonal Decomposition (SPOD) method and spatial Fourier transform. It is found that the strongly swirling jet for H/d = 1 provides most effective overall cooling of the surface for the considered flow configurations.

UR - http://www.scopus.com/inward/record.url?scp=85097335901&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/1677/1/012002

DO - 10.1088/1742-6596/1677/1/012002

M3 - Conference article

AN - SCOPUS:85097335901

VL - 1677

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012002

T2 - 36th Siberian Thermophysical Seminar, STS 2020

Y2 - 5 October 2020 through 7 October 2020

ER -

ID: 27071077