Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Asymptotic coefficients of the attached-eddy model derived from an adiabatic atmosphere

Journal Article · · Journal of Fluid Mechanics
DOI:https://doi.org/10.1017/jfm.2025.394· OSTI ID:2566008

The attached-eddy model (AEM) predicts that the mean streamwise velocity and streamwise velocity variance profiles follow a logarithmic shape, while the vertical velocity variance remains invariant with height in the overlap region of high Reynolds number wall-bounded turbulent flows. Moreover, the AEM coefficients are presumed to attain asymptotically constant values at very high Reynolds numbers. Here, the AEM predictions are examined using sonic anemometer measurements in the near-neutral atmospheric surface layer, with a focus on the logarithmic behaviour of the streamwise velocity variance. Utilizing an extensive 210-day dataset collected from a 62 m meteorological tower located in the Eastern Snake River Plain, Idaho, USA, the inertial sublayer is first identified by analysing the measured momentum flux and mean velocity profiles. The logarithmic behaviour of the streamwise velocity variance and the associated ‘ $-1$$ ’ scaling of the streamwise velocity energy spectra are then investigated. The findings indicate that the Townsend–Perry coefficient ( $$A_1$$ ) is influenced by mild non-stationarity that manifests itself as a Reynolds number dependence. After excluding non-stationary runs, and requiring the bulk Reynolds number defined using the atmospheric boundary layer height to be larger than $$4 \times 10^{7}$$ , the inferred $$A_1$$ converges to values ranging between 1 and 1.25, consistent with laboratory experiments. Furthermore, nine benchmark cases selected through a restrictive quality control reveal a close relation between the ‘ $$-1$$ ’ scaling in the streamwise velocity energy spectrum and the logarithmic behaviour of streamwise velocity variance. However, additional data are required to determine whether the plateau value of the pre-multiplied streamwise velocity energy spectrum is identical to $$A_1$ .

Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0022072
OSTI ID:
2566008
Journal Information:
Journal of Fluid Mechanics, Journal Name: Journal of Fluid Mechanics Vol. 1011; ISSN 0022-1120
Publisher:
Cambridge University Press (CUP)Copyright Statement
Country of Publication:
United Kingdom
Language:
English

References (72)

Revisiting the formulations for the longitudinal velocity variance in the unstable atmospheric surface layer: Longitudinal Velocity Variance in Unstable Atmosphere journal November 2014
Structure of the PBL book January 1988
Eddy Covariance book January 2012
A Note on the Businger-Dyer Profiles book January 1988
Spectra and correlation functions of surface layer atmospheric turbulence in unstable thermal stratification book January 1991
Spectral scaling in a high reynolds number laboratory boundary layer journal August 1993
On the determination of the height of the Ekman boundary layer journal December 1972
The characteristics of turbulent velocity components in the surface layer under convective conditions journal May 1977
A method for estimating wall friction in turbulent wall-bounded flows journal November 2007
Monin-Obukhov Functions for Standard Deviations of Velocity journal October 2008
Coherent Structures and the Dissimilarity of Turbulent Transport of Momentum and Scalars in the Unstable Atmospheric Surface Layer journal April 2011
Towards Reconciling the Large-Scale Structure of Turbulent Boundary Layers in the Atmosphere and Laboratory journal June 2012
Scaling of Wall-Normal Turbulence Intensity and Vertical Eddy Structures in the Atmospheric Surface Layer journal October 2017
Plume Dispersion in Low-Wind-Speed Conditions During Project Sagebrush Phase 2, with Emphasis on Concentration Variability journal May 2018
On the Influence of Large-Scale Atmospheric Motions on Near-Surface Turbulence: Comparison Between Flows Over Low-Roughness and Tall Vegetation Canopies journal June 2022
Spectral measurements of temperature and longitudinal velocity fluctuations in fully developed pipe flow journal August 1970
Tools for quality assessment of surface-based flux measurements journal January 1996
The Turbulent Boundary Layer book January 1956
Review and intercomparison of operational methods for the determination of the mixing height journal January 2000
Turbulence profiles from a smooth flat-plate turbulent boundary layer at high Reynolds number journal July 2012
Scaling of the streamwise velocity component in turbulent pipe flow journal January 1999
Study of the near-wall-turbulent region of the high-Reynolds-number boundary layer using an atmospheric flow journal February 2006
Evaluations of the von Kármán constant in the atmospheric surface layer journal July 2006
‘Inactive’ motion and pressure fluctuations in turbulent boundary layers journal November 1967
Scaling laws for pipe-flow turbulence journal January 1975
Asymptotic similarity of turbulence structures in smooth- and rough-walled pipes journal March 1977
Structural similarity in radial correlations and spectra of longitudinal velocity fluctuations in pipe flow journal October 1978
On the mechanism of wall turbulence journal June 1982
A theoretical and experimental study of wall turbulence journal April 1986
An experimental study of the turbulence structure in smooth- and rough-wall boundary layers journal April 1987
Experimental support for the attached-eddy hypothesis in zero-pressure-gradient turbulent boundary layers journal September 1990
Low-Reynolds-number turbulent boundary layers journal September 1991
On the logarithmic region in wall turbulence journal January 2013
Very large scale motions in the atmospheric surface layer: a field investigation journal August 2016
Fully resolved measurements of turbulent boundary layer flows up to journal July 2018
Data-driven decomposition of the streamwise turbulence kinetic energy in boundary layers. Part 1. Energy spectra journal November 2019
The logarithmic variance of streamwise velocity and conundrum in wall turbulence journal December 2021
Identification of the energy contributions associated with wall-attached eddies and very-large-scale motions in the near-neutral atmospheric surface layer through wind LiDAR measurements journal January 2023
Energy-Inertial Scale Interactions for Velocity and Temperature in the Unstable Atmospheric Surface Layer journal January 1997
A Theoretical and Experimental Investigation of Energy-Containing Scales in the Dynamic Sublayer of Boundary-Layer Flows journal February 1998
Theory And Measurements For Turbulence Spectra And Variances In The Atmospheric Neutral Surface Layer journal April 2002
Sonic Anemometer Tilt Correction Algorithms journal April 2001
The Shuttle Radar Topography Mission journal January 2007
Low-wavenumber spectral characteristics of velocity and temperature in the atmospheric surface layer journal January 1995
Streamwise turbulence intensity formulation for flat-plate boundary layers journal August 2003
Variations of von Kármán coefficient in canonical flows journal October 2008
Wall-bounded turbulent flows at high Reynolds numbers: Recent advances and key issues journal June 2010
Co-spectrum and mean velocity in turbulent boundary layers journal September 2013
Logarithmic scaling in the longitudinal velocity variance explained by a spectral budget journal December 2013
Generalized logarithmic scaling for high-order moments of the longitudinal velocity component explained by the random sweeping decorrelation hypothesis journal September 2016
Experimental and theoretical evaluation of the k−11 spectral law journal January 1987
Similarity law for the streamwise turbulence intensity in zero-pressure-gradient turbulent boundary layers journal December 1997
A note on the overlap region in turbulent boundary layers journal January 2000
Atmospheric Boundary Layer Flows: Their Structure and Measurement book March 1994
The Spectrum of Turbulence journal February 1938
Profiles of high-order moments of longitudinal velocity explained by the random sweeping decorrelation hypothesis journal April 2022
Turbulent Pipe Flow at Extreme Reynolds Numbers journal February 2012
Generalizing Monin-Obukhov Similarity Theory (1954) for Complex Atmospheric Turbulence journal March 2023
Origin of the “ − 1 ” Spectral Law in Wall-Bounded Turbulence journal July 1999
Evidence of the k 1 − 1 Law in a High-Reynolds-Number Turbulent Boundary Layer journal August 2005
Attached Eddy Model of Wall Turbulence journal January 2019
High–Reynolds Number Wall Turbulence journal January 2011
Atmospheric Turbulence journal January 1992
How Long Is Long Enough When Measuring Fluxes and Other Turbulence Statistics? journal June 1994
Spectra of Velocity and Temperature Fluctuations in the Atmospheric Boundary Layer Over the Sea journal July 1966
Horizontal Velocity Spectra in an Unstable Surface Layer journal January 1978
Comments on “Horizontal Velocity Spectra in an Unstable Surface Layer” journal September 1978
Project Sagebrush: Revisiting the Value of the Horizontal Plume Spread Parameter σ y journal June 2016
Mechanisms for Wind Direction Changes in the Very Stable Boundary Layer journal November 2018
Turbulent Velocity-Variance Profiles in the Stable Boundary Layer Generated by a Nocturnal Low-Level Jet journal November 2006
The local isotropy hypothesis and the turbulent kinetic energy dissipation rate in the atmospheric surface layer journal October 2004
Uncertainties in temperature statistics and fluxes determined by sonic anemometers due to wind-induced vibrations of mounting arms journal July 2024

Similar Records

Prandtl number effects on extreme mixing events in forced stratified turbulence
Journal Article · Mon Mar 11 20:00:00 EDT 2024 · Journal of Fluid Mechanics · OSTI ID:2323351

A data-driven method for modelling dissipation rates in stratified turbulence
Journal Article · Mon Dec 18 19:00:00 EST 2023 · Journal of Fluid Mechanics · OSTI ID:2246688

Flow in additively manufactured super-rough channels
Journal Article · Thu Jul 28 20:00:00 EDT 2022 · Flow · OSTI ID:1878655

Related Subjects