Compressible boundary layer predictions at high Reynolds number using hybrid LES/RANS methods

Jung Il Choi; Jack R. Edwards; Robert A. Baurle

doi:10.2514/6.2008-4175

Compressible boundary layer predictions at high Reynolds number using hybrid LES/RANS methods

Jung Il Choi, Jack R. Edwards, Robert A. Baurle

Department of Computational Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

10 Citations (Scopus)

Abstract

Simulations of compressible boundary layer flow at three different Reynolds numbers (Reδ = 5.59×10⁴, 1.78×10⁵, and 1.58×10⁶) are performed using a hybrid large-eddy/Reynolds- averaged Navier-Stokes method. Variations in the recycling/rescaling method, the higher-order extension, the choice of primitive variables, the RANS/LES transition parameters, and the mesh resolution are considered in order to assess the model. The results indicate that the present model can provide good predictions of the mean flow properties and second-moment statistics of the boundary layers considered. Normalized Reynolds stresses in the outer layer are found to be independent of Reynolds number, similar to incompressible turbulent boundary layers.

Original language	English
Title of host publication	38th AIAA Fluid Dynamics Conference and Exhibit
Publisher	American Institute of Aeronautics and Astronautics Inc.
ISBN (Print)	9781563479427
DOIs	https://doi.org/10.2514/6.2008-4175
Publication status	Published - 2008

Publication series

Name	38th AIAA Fluid Dynamics Conference and Exhibit

All Science Journal Classification (ASJC) codes

Engineering(all)

Access to Document

10.2514/6.2008-4175

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title = "Compressible boundary layer predictions at high Reynolds number using hybrid LES/RANS methods",

abstract = "Simulations of compressible boundary layer flow at three different Reynolds numbers (Reδ = 5.59×104, 1.78×105, and 1.58×106) are performed using a hybrid large-eddy/Reynolds- averaged Navier-Stokes method. Variations in the recycling/rescaling method, the higher-order extension, the choice of primitive variables, the RANS/LES transition parameters, and the mesh resolution are considered in order to assess the model. The results indicate that the present model can provide good predictions of the mean flow properties and second-moment statistics of the boundary layers considered. Normalized Reynolds stresses in the outer layer are found to be independent of Reynolds number, similar to incompressible turbulent boundary layers.",

author = "Choi, {Jung Il} and Edwards, {Jack R.} and Baurle, {Robert A.}",

year = "2008",

doi = "10.2514/6.2008-4175",

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Compressible boundary layer predictions at high Reynolds number using hybrid LES/RANS methods. / Choi, Jung Il; Edwards, Jack R.; Baurle, Robert A.

38th AIAA Fluid Dynamics Conference and Exhibit. American Institute of Aeronautics and Astronautics Inc., 2008. 2008-4175 (38th AIAA Fluid Dynamics Conference and Exhibit).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AU - Edwards, Jack R.

AU - Baurle, Robert A.

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N2 - Simulations of compressible boundary layer flow at three different Reynolds numbers (Reδ = 5.59×104, 1.78×105, and 1.58×106) are performed using a hybrid large-eddy/Reynolds- averaged Navier-Stokes method. Variations in the recycling/rescaling method, the higher-order extension, the choice of primitive variables, the RANS/LES transition parameters, and the mesh resolution are considered in order to assess the model. The results indicate that the present model can provide good predictions of the mean flow properties and second-moment statistics of the boundary layers considered. Normalized Reynolds stresses in the outer layer are found to be independent of Reynolds number, similar to incompressible turbulent boundary layers.

AB - Simulations of compressible boundary layer flow at three different Reynolds numbers (Reδ = 5.59×104, 1.78×105, and 1.58×106) are performed using a hybrid large-eddy/Reynolds- averaged Navier-Stokes method. Variations in the recycling/rescaling method, the higher-order extension, the choice of primitive variables, the RANS/LES transition parameters, and the mesh resolution are considered in order to assess the model. The results indicate that the present model can provide good predictions of the mean flow properties and second-moment statistics of the boundary layers considered. Normalized Reynolds stresses in the outer layer are found to be independent of Reynolds number, similar to incompressible turbulent boundary layers.

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