POD-analysis of the near field of a turbulent circular jet when mixing gases of different densities

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POD-analysis of the near field of a turbulent circular jet when mixing gases of different densities. / Ivashchenko, V. A.; Palkin, E. V.; Ryzhenkov, V. O. et al.

In: Thermophysics and Aeromechanics, Vol. 28, No. 1, 01.2021, p. 55-64.

Research output: Contribution to journal › Article › peer-review

Author

Ivashchenko, V. A. ; Palkin, E. V. ; Ryzhenkov, V. O. et al. / POD-analysis of the near field of a turbulent circular jet when mixing gases of different densities. In: Thermophysics and Aeromechanics. 2021 ; Vol. 28, No. 1. pp. 55-64.

BibTeX

@article{8b57d2801c6a446fb75fb41c68279a95,

title = "POD-analysis of the near field of a turbulent circular jet when mixing gases of different densities",

abstract = "A turbulent circular jet with variable density caused by the mixing of air with gases of different densities (air, helium, and carbon dioxide) is studied. The Reynolds number is fixed for all cases: Re = 5300. Using proper orthogonal decomposition and direct numerical simulation data, a comparative analysis of the three gases under consideration is carried out. It is shown that with a decrease in the ambient gas density, the frequency of coherent structures formation drops, and the number of proper orthogonal decomposition (POD) modes necessary for constructing a low-dimensional flow model decreases.",

keywords = "direct numerical simulation, DNS, jets, POD, proper orthogonal decomposition, turbulence",

author = "Ivashchenko, {V. A.} and Palkin, {E. V.} and Ryzhenkov, {V. O.} and Mullyadzhanov, {R. I.}",

note = "Funding Information: The work was partially supported by the Russian Foundation for Basic Research (Grants No. 18-38-20167 and No. 19-08-01227), the development of the computational code was carried out within the framework of the state task for IT SB RAS. Publisher Copyright: {\textcopyright} 2021, V.A. Ivashchenko, E.V. Palkin, V.O. Ryzhenkov, and R.I. Mullyadzhanov. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",

year = "2021",

month = jan,

doi = "10.1134/S0869864321010066",

language = "English",

volume = "28",

pages = "55--64",

journal = "Thermophysics and Aeromechanics",

issn = "0869-8643",

publisher = "PLEIADES PUBLISHING INC",

number = "1",

}

RIS

TY - JOUR

T1 - POD-analysis of the near field of a turbulent circular jet when mixing gases of different densities

AU - Ivashchenko, V. A.

AU - Palkin, E. V.

AU - Ryzhenkov, V. O.

AU - Mullyadzhanov, R. I.

N1 - Funding Information: The work was partially supported by the Russian Foundation for Basic Research (Grants No. 18-38-20167 and No. 19-08-01227), the development of the computational code was carried out within the framework of the state task for IT SB RAS. Publisher Copyright: © 2021, V.A. Ivashchenko, E.V. Palkin, V.O. Ryzhenkov, and R.I. Mullyadzhanov. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/1

Y1 - 2021/1

N2 - A turbulent circular jet with variable density caused by the mixing of air with gases of different densities (air, helium, and carbon dioxide) is studied. The Reynolds number is fixed for all cases: Re = 5300. Using proper orthogonal decomposition and direct numerical simulation data, a comparative analysis of the three gases under consideration is carried out. It is shown that with a decrease in the ambient gas density, the frequency of coherent structures formation drops, and the number of proper orthogonal decomposition (POD) modes necessary for constructing a low-dimensional flow model decreases.

AB - A turbulent circular jet with variable density caused by the mixing of air with gases of different densities (air, helium, and carbon dioxide) is studied. The Reynolds number is fixed for all cases: Re = 5300. Using proper orthogonal decomposition and direct numerical simulation data, a comparative analysis of the three gases under consideration is carried out. It is shown that with a decrease in the ambient gas density, the frequency of coherent structures formation drops, and the number of proper orthogonal decomposition (POD) modes necessary for constructing a low-dimensional flow model decreases.

KW - direct numerical simulation

KW - DNS

KW - jets

KW - POD

KW - proper orthogonal decomposition

KW - turbulence

UR - http://www.scopus.com/inward/record.url?scp=85106961835&partnerID=8YFLogxK

U2 - 10.1134/S0869864321010066

DO - 10.1134/S0869864321010066

M3 - Article

AN - SCOPUS:85106961835

VL - 28

SP - 55

EP - 64

JO - Thermophysics and Aeromechanics

JF - Thermophysics and Aeromechanics

SN - 0869-8643

IS - 1

ER -

ID: 29238069