Optimization of a SPIV experiment for derivative moments assessment in a turbulent boundary layer

Jean Marc Foucaut; William K. George; Michel Stanislas; Christophe Cuvier

doi:10.1007/s00348-021-03339-9

Optimization of a SPIV experiment for derivative moments assessment in a turbulent boundary layer

Jean Marc Foucaut
, William K. George
, Michel Stanislas
, Christophe Cuvier

Department of Mechanical and Aerospace Engineering

University at Buffalo

University Lille
Centrale Lille

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

8 Scopus citations

Abstract

Abstract: A SPIV experiment using two orthogonal planes simultaneously was performed in the LML boundary layer facility to specifically measure all of the derivative moments needed to estimate the dissipation rate of the turbulence kinetic energy. The Reynolds number was Re_θ= 7500 or Re_τ= 2300. A detailed analysis of the errors in derivative measurements was carried out, as well as applying and using consistency checks derived from the continuity equation. The random noise error was quantified and used to “denoise” the derivative moments. A comparison with a DNS channel flow at comparable Reynolds number demonstrated the capability of the technique. The results were further validated using the recent theory developed by George and Stanislas (Exp Fluids 62:188, 2021). An important result of the present work is the provision of reliable rules for an accurate assessment of the dissipation in future PIV experiments. Graphical abstract: [Figure not available: see fulltext.].

Original language	English
Article number	244
Journal	Experiments in Fluids
Volume	62
Issue number	12
DOIs	https://doi.org/10.1007/s00348-021-03339-9
State	Published - Dec 2021

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title = "Optimization of a SPIV experiment for derivative moments assessment in a turbulent boundary layer",

abstract = "Abstract: A SPIV experiment using two orthogonal planes simultaneously was performed in the LML boundary layer facility to specifically measure all of the derivative moments needed to estimate the dissipation rate of the turbulence kinetic energy. The Reynolds number was Reθ= 7500 or Reτ= 2300. A detailed analysis of the errors in derivative measurements was carried out, as well as applying and using consistency checks derived from the continuity equation. The random noise error was quantified and used to “denoise” the derivative moments. A comparison with a DNS channel flow at comparable Reynolds number demonstrated the capability of the technique. The results were further validated using the recent theory developed by George and Stanislas (Exp Fluids 62:188, 2021). An important result of the present work is the provision of reliable rules for an accurate assessment of the dissipation in future PIV experiments. Graphical abstract: [Figure not available: see fulltext.].",

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AU - Foucaut, Jean Marc

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AU - Stanislas, Michel

AU - Cuvier, Christophe

PY - 2021/12

Y1 - 2021/12

N2 - Abstract: A SPIV experiment using two orthogonal planes simultaneously was performed in the LML boundary layer facility to specifically measure all of the derivative moments needed to estimate the dissipation rate of the turbulence kinetic energy. The Reynolds number was Reθ= 7500 or Reτ= 2300. A detailed analysis of the errors in derivative measurements was carried out, as well as applying and using consistency checks derived from the continuity equation. The random noise error was quantified and used to “denoise” the derivative moments. A comparison with a DNS channel flow at comparable Reynolds number demonstrated the capability of the technique. The results were further validated using the recent theory developed by George and Stanislas (Exp Fluids 62:188, 2021). An important result of the present work is the provision of reliable rules for an accurate assessment of the dissipation in future PIV experiments. Graphical abstract: [Figure not available: see fulltext.].

AB - Abstract: A SPIV experiment using two orthogonal planes simultaneously was performed in the LML boundary layer facility to specifically measure all of the derivative moments needed to estimate the dissipation rate of the turbulence kinetic energy. The Reynolds number was Reθ= 7500 or Reτ= 2300. A detailed analysis of the errors in derivative measurements was carried out, as well as applying and using consistency checks derived from the continuity equation. The random noise error was quantified and used to “denoise” the derivative moments. A comparison with a DNS channel flow at comparable Reynolds number demonstrated the capability of the technique. The results were further validated using the recent theory developed by George and Stanislas (Exp Fluids 62:188, 2021). An important result of the present work is the provision of reliable rules for an accurate assessment of the dissipation in future PIV experiments. Graphical abstract: [Figure not available: see fulltext.].

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Optimization of a SPIV experiment for derivative moments assessment in a turbulent boundary layer

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