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Localized shear-layer disturbances affected by laminar flow separation. / Katasonov, M. M.; Pavlenko, A. M.; Kozlov, V. V. et al.

19th International Conference on the Methods of Aerophysical Research, ICMAR 2018. ed. / Vasily Fomin. American Institute of Physics Inc., 2018. 030099 (AIP Conference Proceedings; Vol. 2027).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Research › peer-review

Harvard

Katasonov, MM, Pavlenko, AM, Kozlov, VV & Dovgal, AV 2018, Localized shear-layer disturbances affected by laminar flow separation. in V Fomin (ed.), 19th International Conference on the Methods of Aerophysical Research, ICMAR 2018., 030099, AIP Conference Proceedings, vol. 2027, American Institute of Physics Inc., 19th International Conference on the Methods of Aerophysical Research, ICMAR 2018, Akademgorodok, Novosibirsk, Russian Federation, 13.08.2018. https://doi.org/10.1063/1.5065193

APA

Katasonov, M. M., Pavlenko, A. M., Kozlov, V. V., & Dovgal, A. V. (2018). Localized shear-layer disturbances affected by laminar flow separation. In V. Fomin (Ed.), 19th International Conference on the Methods of Aerophysical Research, ICMAR 2018 [030099] (AIP Conference Proceedings; Vol. 2027). American Institute of Physics Inc.. https://doi.org/10.1063/1.5065193

Vancouver

Katasonov MM, Pavlenko AM, Kozlov VV, Dovgal AV. Localized shear-layer disturbances affected by laminar flow separation. In Fomin V, editor, 19th International Conference on the Methods of Aerophysical Research, ICMAR 2018. American Institute of Physics Inc. 2018. 030099. (AIP Conference Proceedings). doi: 10.1063/1.5065193

Author

Katasonov, M. M. ; Pavlenko, A. M. ; Kozlov, V. V. et al. / Localized shear-layer disturbances affected by laminar flow separation. 19th International Conference on the Methods of Aerophysical Research, ICMAR 2018. editor / Vasily Fomin. American Institute of Physics Inc., 2018. (AIP Conference Proceedings).

BibTeX

@inproceedings{94ccf94ec15f457587f2db12815e70b7,
title = "Localized shear-layer disturbances affected by laminar flow separation",
abstract = "Evolution of laminar flow localized perturbations generated in shear layers by low-frequency local vibration of the wall is investigated in a wind tunnel. The experimental data are obtained at low subsonic velocities by hot-wire measurements. A laminar boundary layer on flat plate placed parallel to the oncoming flow represents the basic examined configuration. The local surface vibration generates longitudinal velocity disturbances in the form of spatially localized quasi-stationary deformations of the near-wall flow region. According to recent experimental data, in such conditions the high-frequency instability is stimulated at the forward and rear fronts of the longitudinal structures. Then, the basic flat-plate flow is modified by a 2D backward-facing step mounted on the plate which creates a local region of boundary-layer separation. The characteristics of velocity perturbations induced by surface vibration are compared in the attached and separated shear layers. As is found, laminar flow separation promotes the amplification of high-frequency oscillations at the fronts of streaky structures, thus, stimulating the transition to turbulence.",
keywords = "INSTABILITY",
author = "Katasonov, {M. M.} and Pavlenko, {A. M.} and Kozlov, {V. V.} and Dovgal, {A. V.}",
year = "2018",
month = nov,
day = "2",
doi = "10.1063/1.5065193",
language = "English",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
editor = "Vasily Fomin",
booktitle = "19th International Conference on the Methods of Aerophysical Research, ICMAR 2018",
note = "19th International Conference on the Methods of Aerophysical Research, ICMAR 2018 ; Conference date: 13-08-2018 Through 19-08-2018",

}

RIS

TY - GEN

T1 - Localized shear-layer disturbances affected by laminar flow separation

AU - Katasonov, M. M.

AU - Pavlenko, A. M.

AU - Kozlov, V. V.

AU - Dovgal, A. V.

PY - 2018/11/2

Y1 - 2018/11/2

N2 - Evolution of laminar flow localized perturbations generated in shear layers by low-frequency local vibration of the wall is investigated in a wind tunnel. The experimental data are obtained at low subsonic velocities by hot-wire measurements. A laminar boundary layer on flat plate placed parallel to the oncoming flow represents the basic examined configuration. The local surface vibration generates longitudinal velocity disturbances in the form of spatially localized quasi-stationary deformations of the near-wall flow region. According to recent experimental data, in such conditions the high-frequency instability is stimulated at the forward and rear fronts of the longitudinal structures. Then, the basic flat-plate flow is modified by a 2D backward-facing step mounted on the plate which creates a local region of boundary-layer separation. The characteristics of velocity perturbations induced by surface vibration are compared in the attached and separated shear layers. As is found, laminar flow separation promotes the amplification of high-frequency oscillations at the fronts of streaky structures, thus, stimulating the transition to turbulence.

AB - Evolution of laminar flow localized perturbations generated in shear layers by low-frequency local vibration of the wall is investigated in a wind tunnel. The experimental data are obtained at low subsonic velocities by hot-wire measurements. A laminar boundary layer on flat plate placed parallel to the oncoming flow represents the basic examined configuration. The local surface vibration generates longitudinal velocity disturbances in the form of spatially localized quasi-stationary deformations of the near-wall flow region. According to recent experimental data, in such conditions the high-frequency instability is stimulated at the forward and rear fronts of the longitudinal structures. Then, the basic flat-plate flow is modified by a 2D backward-facing step mounted on the plate which creates a local region of boundary-layer separation. The characteristics of velocity perturbations induced by surface vibration are compared in the attached and separated shear layers. As is found, laminar flow separation promotes the amplification of high-frequency oscillations at the fronts of streaky structures, thus, stimulating the transition to turbulence.

KW - INSTABILITY

UR - http://www.scopus.com/inward/record.url?scp=85056354943&partnerID=8YFLogxK

U2 - 10.1063/1.5065193

DO - 10.1063/1.5065193

M3 - Conference contribution

AN - SCOPUS:85056354943

T3 - AIP Conference Proceedings

BT - 19th International Conference on the Methods of Aerophysical Research, ICMAR 2018

A2 - Fomin, Vasily

PB - American Institute of Physics Inc.

T2 - 19th International Conference on the Methods of Aerophysical Research, ICMAR 2018

Y2 - 13 August 2018 through 19 August 2018

ER -

ID: 25833445