Similarity of length scales in high-Reynolds-number wall-bounded flows

Nikolay Gustenyov; Margit Egerer; Marcus Hultmark; Alexander J. Smits; Sean C.C. Bailey

doi:10.1017/jfm.2023.417

Similarity of length scales in high-Reynolds-number wall-bounded flows

Nikolay Gustenyov
, Margit Egerer
, Marcus Hultmark
, Alexander J. Smits
, Sean C.C. Bailey

Mechanical and Aerospace Engineering

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

5 Scopus citations

Abstract

The wall dependence of length scales used to describe large- and small-scale structures of turbulence is examined using highly resolved experiments in zero-pressure-gradient turbulent boundary layers and pipe flows spanning the range 2000 < Reτ. Of particular interest is the influence of external intermittency on the scaling of these length scales. It is found that when suitable scaling parameters are selected and external intermittency is accounted for, the dissipative motions follow inner scaling even into the outer-scaled regions of the flow, and that certain large-scale descriptions follow outer scaling even in the inner-scaled regions of the flow. The wall dependence is the same for both internal pipe and external boundary layer flows, and the different length scales can be related to recognizable features in the longitudinal wavenumber spectrum.

Original language	English
Article number	A17
Journal	Journal of Fluid Mechanics
Volume	965
DOIs	https://doi.org/10.1017/jfm.2023.417
State	Published - Jun 16 2023

Bibliographical note

Funding Information:
Financial support for this work was provided by NASA EPSCoR through award no. 80NSSC19M0144. A.J.S. was supported by ONR through grant N00014-17-1-2309.

Publisher Copyright:
© The Author(s), 2023. Published by Cambridge University Press.

Funding

Financial support for this work was provided by NASA EPSCoR through award no. 80NSSC19M0144. A.J.S. was supported by ONR through grant N00014-17-1-2309.

Funders	Funder number
Kentucky NASA EPSCoR	80NSSC19M0144
Office of Naval Research	N00014-17-1-2309

Keywords

intermittency
pipe flow
turbulent boundary layers

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Applied Mathematics

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10.1017/jfm.2023.417

Cite this

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title = "Similarity of length scales in high-Reynolds-number wall-bounded flows",

abstract = "The wall dependence of length scales used to describe large- and small-scale structures of turbulence is examined using highly resolved experiments in zero-pressure-gradient turbulent boundary layers and pipe flows spanning the range 2000 < Reτ. Of particular interest is the influence of external intermittency on the scaling of these length scales. It is found that when suitable scaling parameters are selected and external intermittency is accounted for, the dissipative motions follow inner scaling even into the outer-scaled regions of the flow, and that certain large-scale descriptions follow outer scaling even in the inner-scaled regions of the flow. The wall dependence is the same for both internal pipe and external boundary layer flows, and the different length scales can be related to recognizable features in the longitudinal wavenumber spectrum.",

keywords = "intermittency, pipe flow, turbulent boundary layers",

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note = "Funding Information: Financial support for this work was provided by NASA EPSCoR through award no. 80NSSC19M0144. A.J.S. was supported by ONR through grant N00014-17-1-2309. Publisher Copyright: {\textcopyright} The Author(s), 2023. Published by Cambridge University Press.",

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AU - Gustenyov, Nikolay

AU - Egerer, Margit

AU - Hultmark, Marcus

AU - Smits, Alexander J.

AU - Bailey, Sean C.C.

N1 - Funding Information: Financial support for this work was provided by NASA EPSCoR through award no. 80NSSC19M0144. A.J.S. was supported by ONR through grant N00014-17-1-2309. Publisher Copyright: © The Author(s), 2023. Published by Cambridge University Press.

PY - 2023/6/16

Y1 - 2023/6/16

N2 - The wall dependence of length scales used to describe large- and small-scale structures of turbulence is examined using highly resolved experiments in zero-pressure-gradient turbulent boundary layers and pipe flows spanning the range 2000 < Reτ. Of particular interest is the influence of external intermittency on the scaling of these length scales. It is found that when suitable scaling parameters are selected and external intermittency is accounted for, the dissipative motions follow inner scaling even into the outer-scaled regions of the flow, and that certain large-scale descriptions follow outer scaling even in the inner-scaled regions of the flow. The wall dependence is the same for both internal pipe and external boundary layer flows, and the different length scales can be related to recognizable features in the longitudinal wavenumber spectrum.

AB - The wall dependence of length scales used to describe large- and small-scale structures of turbulence is examined using highly resolved experiments in zero-pressure-gradient turbulent boundary layers and pipe flows spanning the range 2000 < Reτ. Of particular interest is the influence of external intermittency on the scaling of these length scales. It is found that when suitable scaling parameters are selected and external intermittency is accounted for, the dissipative motions follow inner scaling even into the outer-scaled regions of the flow, and that certain large-scale descriptions follow outer scaling even in the inner-scaled regions of the flow. The wall dependence is the same for both internal pipe and external boundary layer flows, and the different length scales can be related to recognizable features in the longitudinal wavenumber spectrum.

KW - intermittency

KW - pipe flow

KW - turbulent boundary layers

UR - https://www.scopus.com/pages/publications/85164257009

UR - https://www.scopus.com/pages/publications/85164257009#tab=citedBy

U2 - 10.1017/jfm.2023.417

DO - 10.1017/jfm.2023.417

M3 - Article

AN - SCOPUS:85164257009

SN - 0022-1120

VL - 965

JO - Journal of Fluid Mechanics

JF - Journal of Fluid Mechanics

M1 - A17

ER -

Similarity of length scales in high-Reynolds-number wall-bounded flows

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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