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Control of the turbulent wake flow behind a circular cylinder by asymmetric sectoral hydrophobic coatings. / Lebedev, Anatoliy; Dobroselsky, Konstantin; Safonov, Alexey et al.

In: Physics of Fluids, Vol. 33, No. 12, 121703, 01.12.2021.

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

Harvard

Lebedev, A, Dobroselsky, K, Safonov, A, Starinskiy, S, Sulyaeva, V, Lobasov, A, Dulin, V & Markides, CN 2021, 'Control of the turbulent wake flow behind a circular cylinder by asymmetric sectoral hydrophobic coatings', Physics of Fluids, vol. 33, no. 12, 121703. https://doi.org/10.1063/5.0073687

APA

Lebedev, A., Dobroselsky, K., Safonov, A., Starinskiy, S., Sulyaeva, V., Lobasov, A., Dulin, V., & Markides, C. N. (2021). Control of the turbulent wake flow behind a circular cylinder by asymmetric sectoral hydrophobic coatings. Physics of Fluids, 33(12), [121703]. https://doi.org/10.1063/5.0073687

Vancouver

Lebedev A, Dobroselsky K, Safonov A, Starinskiy S, Sulyaeva V, Lobasov A et al. Control of the turbulent wake flow behind a circular cylinder by asymmetric sectoral hydrophobic coatings. Physics of Fluids. 2021 Dec 1;33(12):121703. doi: 10.1063/5.0073687

Author

Lebedev, Anatoliy ; Dobroselsky, Konstantin ; Safonov, Alexey et al. / Control of the turbulent wake flow behind a circular cylinder by asymmetric sectoral hydrophobic coatings. In: Physics of Fluids. 2021 ; Vol. 33, No. 12.

BibTeX

@article{6afc3f734d1b4500ada185ffcbdc61c1,
title = "Control of the turbulent wake flow behind a circular cylinder by asymmetric sectoral hydrophobic coatings",
abstract = "We demonstrate that sectoral coating by a hydrophobic fluoropolymer is an effective method for controlling flow separation and the turbulent wake behind a cylinder in high Reynolds number flows (Re = 2.2 × 105). Time-resolved particle image velocimetry measurements show that the shape of the wake and trajectory of large-scale vortex structures are inclined due to delayed flow separation on one side of the cylinder. Near-wall, high-resolution visualization reveals that this effect is related to micro-bubbles traveling along the coated surface. The properties of the coatings and bubble presence did not deteriorate, even after many hours of continuous facility operation. ",
author = "Anatoliy Lebedev and Konstantin Dobroselsky and Alexey Safonov and Sergey Starinskiy and Veronica Sulyaeva and Aleksei Lobasov and Vladimir Dulin and Markides, {Christos N.}",
note = "Funding Information: This research was funded by the Government of the Russian Federation, under Megagrant Project No. 075-15-2019-1888. The examination of the samples by SEM and ED was performed with support from the Institute of Inorganic Chemistry SB RAS (Project No. FWUZ-2021-0006). The experimental facility was provided within the frame of a state contract in the Kutateladze Institute of Thermophysics. C.N.M. acknowledges the Department for International Development (DFID) and Royal Society-DFID Africa Capacity Building Initiative and the UK Engineering and Physical Sciences Research Council (EPSRC) (Grant No. EP/T03338X/1). Publisher Copyright: {\textcopyright} 2021 Author(s).",
year = "2021",
month = dec,
day = "1",
doi = "10.1063/5.0073687",
language = "English",
volume = "33",
journal = "Physics of Fluids",
issn = "1070-6631",
publisher = "American Institute of Physics",
number = "12",

}

RIS

TY - JOUR

T1 - Control of the turbulent wake flow behind a circular cylinder by asymmetric sectoral hydrophobic coatings

AU - Lebedev, Anatoliy

AU - Dobroselsky, Konstantin

AU - Safonov, Alexey

AU - Starinskiy, Sergey

AU - Sulyaeva, Veronica

AU - Lobasov, Aleksei

AU - Dulin, Vladimir

AU - Markides, Christos N.

N1 - Funding Information: This research was funded by the Government of the Russian Federation, under Megagrant Project No. 075-15-2019-1888. The examination of the samples by SEM and ED was performed with support from the Institute of Inorganic Chemistry SB RAS (Project No. FWUZ-2021-0006). The experimental facility was provided within the frame of a state contract in the Kutateladze Institute of Thermophysics. C.N.M. acknowledges the Department for International Development (DFID) and Royal Society-DFID Africa Capacity Building Initiative and the UK Engineering and Physical Sciences Research Council (EPSRC) (Grant No. EP/T03338X/1). Publisher Copyright: © 2021 Author(s).

PY - 2021/12/1

Y1 - 2021/12/1

N2 - We demonstrate that sectoral coating by a hydrophobic fluoropolymer is an effective method for controlling flow separation and the turbulent wake behind a cylinder in high Reynolds number flows (Re = 2.2 × 105). Time-resolved particle image velocimetry measurements show that the shape of the wake and trajectory of large-scale vortex structures are inclined due to delayed flow separation on one side of the cylinder. Near-wall, high-resolution visualization reveals that this effect is related to micro-bubbles traveling along the coated surface. The properties of the coatings and bubble presence did not deteriorate, even after many hours of continuous facility operation.

AB - We demonstrate that sectoral coating by a hydrophobic fluoropolymer is an effective method for controlling flow separation and the turbulent wake behind a cylinder in high Reynolds number flows (Re = 2.2 × 105). Time-resolved particle image velocimetry measurements show that the shape of the wake and trajectory of large-scale vortex structures are inclined due to delayed flow separation on one side of the cylinder. Near-wall, high-resolution visualization reveals that this effect is related to micro-bubbles traveling along the coated surface. The properties of the coatings and bubble presence did not deteriorate, even after many hours of continuous facility operation.

UR - http://www.scopus.com/inward/record.url?scp=85120648808&partnerID=8YFLogxK

U2 - 10.1063/5.0073687

DO - 10.1063/5.0073687

M3 - Article

AN - SCOPUS:85120648808

VL - 33

JO - Physics of Fluids

JF - Physics of Fluids

SN - 1070-6631

IS - 12

M1 - 121703

ER -

ID: 34893067