An analysis of the spectral turbulent kinetic energy budget in a fully developed turbulent plane channel flow is performed. Direct numerical simulation data are evaluated at friction Reynolds numbers Reτ of 180 and 1000. The analysis is focused on the influence of the Reynolds number on the spectral cascade of energy and the corresponding energy cascade in physical space in the presence of inhomogeneity and anisotropy. The turbulent kinetic energy distribution is compared for both Reynolds numbers, and the relevant characteristics of the energy transfer process in a wall-bounded turbulent flow are described. Differences in energy cascade are noted between the Reynolds number at both low and high wavenumbers. The results of the analysis are further assessed with a comparison to an earlier study of spectral energy transfer at Reτ = 180.
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June 2018
Research Article|
June 27 2018
Analyzing the spectral energy cascade in turbulent channel flow
João Rodrigo Andrade
;
1
Unité de Mécanique de Lille (UML), Polytech’Lille, Université de Lille
, Cité Scientifique, Av. Paul Langevin, 59650 Villeneuve d’Ascq, France
2
Fluid Mechanics Laboratory, Dept. of Mechanical Engineering, Federal University of Uberlândia
, Campus Santa Mônica, Uberlândia, Minas Gerais, Brazil
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Ramon Silva Martins
;
1
Unité de Mécanique de Lille (UML), Polytech’Lille, Université de Lille
, Cité Scientifique, Av. Paul Langevin, 59650 Villeneuve d’Ascq, France
3
Mechanical Engineering Coordination, Instituto Federal do Espírito Santo
, Av. Vitória, 1729, CEP 29.040-780, Vitória, ES, Brazil
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Gilmar Mompean;
1
Unité de Mécanique de Lille (UML), Polytech’Lille, Université de Lille
, Cité Scientifique, Av. Paul Langevin, 59650 Villeneuve d’Ascq, France
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Laurent Thais;
1
Unité de Mécanique de Lille (UML), Polytech’Lille, Université de Lille
, Cité Scientifique, Av. Paul Langevin, 59650 Villeneuve d’Ascq, France
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Thomas B. Gatski
4
Center for Coastal Physical Oceanography, Department of Ocean, Earth and Atmospheric Sciences, Old Dominion University
, Norfolk, Virginia 23529, USA
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Physics of Fluids 30, 065110 (2018)
Article history
Received:
January 17 2018
Accepted:
June 05 2018
Citation
João Rodrigo Andrade, Ramon Silva Martins, Gilmar Mompean, Laurent Thais, Thomas B. Gatski; Analyzing the spectral energy cascade in turbulent channel flow. Physics of Fluids 1 June 2018; 30 (6): 065110. https://doi.org/10.1063/1.5022653
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