A Correlation for the Discontinuity of the Temperature Variance Dissipation Rate at the Fluid-Solid Interface in Turbulent Channel Flows

Abstract : Discontinuity of the dissipation rate associated with the temperature variance at the fluid-solid interface is analyzed in a turbulent channel flow at a Reynolds number, based on the friction velocity of 395 and a Prandtl number of 0.71. The analysis is performed with a wall-resolved Large Eddy Simulation and the results are used to derive a regression for the dissipation rate discontinuity, which depends only on the fluid-solid thermal diffusivity and conductivity ratios. Wall-resolved Large Eddy Simulations at a higher Reynolds number and a higher Prandtl number are used to investigate the validity of two correlations derived from the regression for the selected thermal properties ratios. The present results are obtained with the open-source Computational Fluid Dynamics solver Code Saturne, and use the fully conservative fluid-solid thermal coupling capability introduced by the authors in version 5.0.
Complete list of metadatas

Cited literature [1 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01995617
Contributor : Cedric Flageul <>
Submitted on : Wednesday, February 13, 2019 - 12:52:17 PM
Last modification on : Monday, July 8, 2019 - 3:30:08 PM
Long-term archiving on : Tuesday, May 14, 2019 - 12:31:12 PM

File

LES_fluid_solid.pdf
Publisher files allowed on an open archive

Identifiers

Collections

EDF

Citation

Cédric Flageul, Iztok Tiselj, Sofiane Benhamadouche, Martin Ferrand. A Correlation for the Discontinuity of the Temperature Variance Dissipation Rate at the Fluid-Solid Interface in Turbulent Channel Flows. Flow, Turbulence and Combustion, Springer Verlag (Germany), 2019, ⟨10.1007/s10494-019-00008-0⟩. ⟨hal-01995617⟩

Share

Metrics

Record views

64

Files downloads

33