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

Jung Il Choi; Edwards Jack; Robert A. Baurle

doi:10.2514/1.41598

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

Jung Il Choi, Edwards Jack, Robert A. Baurle

Department of Computational Science and Engineering

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

56 Citations (Scopus)

Abstract

Simulations of compressible boundary-layer flow at three different Reynolds numbers (Re _δ 5:59 × 10 ⁴, 1:78 × 10 ⁵, and 1:58 Times; 10 ⁶) are performed using a hybrid large-eddy simulation/Reynolds-averaged Navier-Stokes method. Variations in the recycling/rescaling method, the higher order extension, the choice of primitive variables, the Reynolds-averaged Navier-Stokes to large eddy simulation 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, second-moment statistics, and structural features of the boundary layers considered. Normalized turbulent statistics in the outer layer are found to be independent of Reynolds number, similar to incompressible turbulent boundary layers.

Original language	English
Pages (from-to)	2179-2193
Number of pages	15
Journal	AIAA journal
Volume	47
Issue number	9
DOIs	https://doi.org/10.2514/1.41598
Publication status	Published - 2009 Sept

Bibliographical note

Funding Information:
This work is supported by NASA under Cooperative Agreement NNX07AC27A-S01. Computer resources have been provided by the High Performance Computing component of North Carolina State University’s Information Technology division.

All Science Journal Classification (ASJC) codes

Aerospace Engineering

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10.2514/1.41598

Cite this

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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 (Re δ 5:59 × 10 4, 1:78 × 10 5, and 1:58 Times; 10 6) are performed using a hybrid large-eddy simulation/Reynolds-averaged Navier-Stokes method. Variations in the recycling/rescaling method, the higher order extension, the choice of primitive variables, the Reynolds-averaged Navier-Stokes to large eddy simulation 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, second-moment statistics, and structural features of the boundary layers considered. Normalized turbulent statistics 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 and Baurle, {Robert A.}",

note = "Funding Information: This work is supported by NASA under Cooperative Agreement NNX07AC27A-S01. Computer resources have been provided by the High Performance Computing component of North Carolina State University{\textquoteright}s Information Technology division.",

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AU - Jack, Edwards

AU - Baurle, Robert A.

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

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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