Experimental study of the effect of enhanced level of freestream turbulence on the development of localized disturbances in the separation region behind the surface step on a flat plate

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Experimental study of the effect of enhanced level of freestream turbulence on the development of localized disturbances in the separation region behind the surface step on a flat plate. / Katasonov, M. M.; Sadovskiy, I. A.

In: AIP Conference Proceedings, Vol. 2504, No. 1, 030020, 16.02.2023.

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

BibTeX

@article{6075f4cdd52248e381d91c2ffe74e2c1,

title = "Experimental study of the effect of enhanced level of freestream turbulence on the development of localized disturbances in the separation region behind the surface step on a flat plate",

abstract = "In a separated flow behind a rectangular step on a flat plate, the effect of an increased (enhanced) level of freestream turbulence is investigated on the occurrence and development of localized disturbances generated by low-frequency impulse deviations of a section of the streamlined surface. The results were obtained using the hot-wire method at a low subsonic flow rate. It was found that impulse deviations of the surface (circular membrane) generate localized disturbances - streaky structures and high-frequency wave packets. The separation of the laminar boundary layer accelerates the growth of wave packets with the subsequent turbulization of the near-wall flow. The specific features of the behavior of localized disturbances under conditions of an increased level of freestream turbulence are revealed.",

author = "Katasonov, {M. M.} and Sadovskiy, {I. A.}",

note = "The work was partially carried out within the state assignment of Ministry of Science and Higher Education of the Russian Federation (project No. 121030500149-8) and with state support of scientific research conducted under the guidance of leading scientists in Russian universities, agreement No. 075-15-2019-1923.; 2021 Actual Problems of Continuum Mechanics: Experiment, Theory, and Applications : XXVIII Всероссийская конференция с международным участием «Высокоэнергетические процессы в механике сплошной среды», посвященная 100-летию со дня рождения Н.Н. Яненко ; Conference date: 20-09-2021 Through 24-09-2021",

year = "2023",

month = feb,

day = "16",

doi = "10.1063/5.0134077",

language = "English",

volume = "2504",

journal = "AIP Conference Proceedings",

issn = "0094-243X",

publisher = "American Institute of Physics",

number = "1",

}

RIS

TY - JOUR

T1 - Experimental study of the effect of enhanced level of freestream turbulence on the development of localized disturbances in the separation region behind the surface step on a flat plate

AU - Katasonov, M. M.

AU - Sadovskiy, I. A.

N1 - The work was partially carried out within the state assignment of Ministry of Science and Higher Education of the Russian Federation (project No. 121030500149-8) and with state support of scientific research conducted under the guidance of leading scientists in Russian universities, agreement No. 075-15-2019-1923.

PY - 2023/2/16

Y1 - 2023/2/16

N2 - In a separated flow behind a rectangular step on a flat plate, the effect of an increased (enhanced) level of freestream turbulence is investigated on the occurrence and development of localized disturbances generated by low-frequency impulse deviations of a section of the streamlined surface. The results were obtained using the hot-wire method at a low subsonic flow rate. It was found that impulse deviations of the surface (circular membrane) generate localized disturbances - streaky structures and high-frequency wave packets. The separation of the laminar boundary layer accelerates the growth of wave packets with the subsequent turbulization of the near-wall flow. The specific features of the behavior of localized disturbances under conditions of an increased level of freestream turbulence are revealed.

AB - In a separated flow behind a rectangular step on a flat plate, the effect of an increased (enhanced) level of freestream turbulence is investigated on the occurrence and development of localized disturbances generated by low-frequency impulse deviations of a section of the streamlined surface. The results were obtained using the hot-wire method at a low subsonic flow rate. It was found that impulse deviations of the surface (circular membrane) generate localized disturbances - streaky structures and high-frequency wave packets. The separation of the laminar boundary layer accelerates the growth of wave packets with the subsequent turbulization of the near-wall flow. The specific features of the behavior of localized disturbances under conditions of an increased level of freestream turbulence are revealed.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85149663178&origin=inward&txGid=fdd2495ca3aa50e50f0d1ac892f4016a

UR - https://www.mendeley.com/catalogue/88cec47f-8a6d-3798-975e-889e77f00e0f/

U2 - 10.1063/5.0134077

DO - 10.1063/5.0134077

M3 - Conference article

VL - 2504

JO - AIP Conference Proceedings

JF - AIP Conference Proceedings

SN - 0094-243X

IS - 1

M1 - 030020

T2 - 2021 Actual Problems of Continuum Mechanics: Experiment, Theory, and Applications

Y2 - 20 September 2021 through 24 September 2021

ER -

ID: 59659646