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An integral model for turbulent wave liquid film. / Geshev, P. I.

In: Thermophysics and Aeromechanics, Vol. 30, No. 2, 03.2023, p. 293-304.

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

Harvard

Geshev, PI 2023, 'An integral model for turbulent wave liquid film', Thermophysics and Aeromechanics, vol. 30, no. 2, pp. 293-304. https://doi.org/10.1134/S0869864323020105

APA

Geshev, P. I. (2023). An integral model for turbulent wave liquid film. Thermophysics and Aeromechanics, 30(2), 293-304. https://doi.org/10.1134/S0869864323020105

Vancouver

Geshev PI. An integral model for turbulent wave liquid film. Thermophysics and Aeromechanics. 2023 Mar;30(2):293-304. doi: 10.1134/S0869864323020105

Author

Geshev, P. I. / An integral model for turbulent wave liquid film. In: Thermophysics and Aeromechanics. 2023 ; Vol. 30, No. 2. pp. 293-304.

BibTeX

@article{13207886623c491ca7c3ef3f5fca6011,
title = "An integral model for turbulent wave liquid film",
abstract = "An integral evolutionary model is constructed for calculating the thickness and flow rate of a fluid in a turbulent wave film, moving under the influence of gravity and tangential stress of a gas stream. Derivation of the model equations requires conditionally averaged Navier–Stokes equations with turbulent viscosity, which appears at averaging over the high-frequency (turbulent) component of the velocity field. The description of turbulent viscosity has been earlier proposed by the author in the form of a formula with a cubic attenuation law in a viscous sublayer, with linear behavior away from the wall and taking into account turbulence attenuation near the free surface of the film. For linear waves of small amplitude, a dispersion equation is derived; its results at small Reynolds numbers are consistent with known calculations by the laminar integral model.",
keywords = "damping, dispersion equation, falling liquid film, gas flow stress, turbulence, waves",
author = "Geshev, {P. I.}",
note = "The study was performed under the state contract with IT SB RAS (No. 121031100246-5). Публикация для корректировки.",
year = "2023",
month = mar,
doi = "10.1134/S0869864323020105",
language = "English",
volume = "30",
pages = "293--304",
journal = "Thermophysics and Aeromechanics",
issn = "0869-8643",
publisher = "PLEIADES PUBLISHING INC",
number = "2",

}

RIS

TY - JOUR

T1 - An integral model for turbulent wave liquid film

AU - Geshev, P. I.

N1 - The study was performed under the state contract with IT SB RAS (No. 121031100246-5). Публикация для корректировки.

PY - 2023/3

Y1 - 2023/3

N2 - An integral evolutionary model is constructed for calculating the thickness and flow rate of a fluid in a turbulent wave film, moving under the influence of gravity and tangential stress of a gas stream. Derivation of the model equations requires conditionally averaged Navier–Stokes equations with turbulent viscosity, which appears at averaging over the high-frequency (turbulent) component of the velocity field. The description of turbulent viscosity has been earlier proposed by the author in the form of a formula with a cubic attenuation law in a viscous sublayer, with linear behavior away from the wall and taking into account turbulence attenuation near the free surface of the film. For linear waves of small amplitude, a dispersion equation is derived; its results at small Reynolds numbers are consistent with known calculations by the laminar integral model.

AB - An integral evolutionary model is constructed for calculating the thickness and flow rate of a fluid in a turbulent wave film, moving under the influence of gravity and tangential stress of a gas stream. Derivation of the model equations requires conditionally averaged Navier–Stokes equations with turbulent viscosity, which appears at averaging over the high-frequency (turbulent) component of the velocity field. The description of turbulent viscosity has been earlier proposed by the author in the form of a formula with a cubic attenuation law in a viscous sublayer, with linear behavior away from the wall and taking into account turbulence attenuation near the free surface of the film. For linear waves of small amplitude, a dispersion equation is derived; its results at small Reynolds numbers are consistent with known calculations by the laminar integral model.

KW - damping

KW - dispersion equation

KW - falling liquid film

KW - gas flow stress

KW - turbulence

KW - waves

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85168160778&origin=inward&txGid=2716a13330fc70f8e43516a076035b44

UR - https://www.mendeley.com/catalogue/a0e7c794-6081-3120-bb2f-bd195fbcbc45/

U2 - 10.1134/S0869864323020105

DO - 10.1134/S0869864323020105

M3 - Article

VL - 30

SP - 293

EP - 304

JO - Thermophysics and Aeromechanics

JF - Thermophysics and Aeromechanics

SN - 0869-8643

IS - 2

ER -

ID: 59654859