An investigation of hybrid LES/RANS models for predicting flow fields with separation

Ken Ichi Abe; Yoshihiro Miyata

An investigation of hybrid LES/RANS models for predicting flow fields with separation

Ken Ichi Abe, Yoshihiro Miyata

Thermophysics and Fluid Mechanics

Research output: Contribution to conference › Paper › peer-review

1 Citation (Scopus)

Abstract

A hybrid approach connecting large eddy simulation (LES) with the Reynolds-averaged Navier-Stokes (RANS) modeling in the near-wall region is studied. In contrast to most of the previous studies that have employed linear eddy-viscosity models, in this study, an advanced non-linear eddy-viscosity model is introduced to resolve the near-wall stress anisotropy more correctly. The proposed model is applied to a periodic hill flow with massive separation, as well as fundamental fully-developed plane channel flows. In the calculations, various grid resolutions are used to investigate the model performance in detail. The present model provides encouraging results for further development of this kind of hybrid LES/RANS model.

Original language	English
Pages	1153-1158
Number of pages	6
Publication status	Published - 2005
Event	4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4 - Williamsburg, VA, United States Duration: Jun 27 2005 → Jun 29 2005

Other

Other	4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4
Country/Territory	United States
City	Williamsburg, VA
Period	6/27/05 → 6/29/05

All Science Journal Classification (ASJC) codes

Fluid Flow and Transfer Processes

Cite this

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title = "An investigation of hybrid LES/RANS models for predicting flow fields with separation",

abstract = "A hybrid approach connecting large eddy simulation (LES) with the Reynolds-averaged Navier-Stokes (RANS) modeling in the near-wall region is studied. In contrast to most of the previous studies that have employed linear eddy-viscosity models, in this study, an advanced non-linear eddy-viscosity model is introduced to resolve the near-wall stress anisotropy more correctly. The proposed model is applied to a periodic hill flow with massive separation, as well as fundamental fully-developed plane channel flows. In the calculations, various grid resolutions are used to investigate the model performance in detail. The present model provides encouraging results for further development of this kind of hybrid LES/RANS model.",

author = "Abe, {Ken Ichi} and Yoshihiro Miyata",

year = "2005",

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pages = "1153--1158",

note = "4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4 ; Conference date: 27-06-2005 Through 29-06-2005",

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T1 - An investigation of hybrid LES/RANS models for predicting flow fields with separation

AU - Abe, Ken Ichi

AU - Miyata, Yoshihiro

PY - 2005

Y1 - 2005

N2 - A hybrid approach connecting large eddy simulation (LES) with the Reynolds-averaged Navier-Stokes (RANS) modeling in the near-wall region is studied. In contrast to most of the previous studies that have employed linear eddy-viscosity models, in this study, an advanced non-linear eddy-viscosity model is introduced to resolve the near-wall stress anisotropy more correctly. The proposed model is applied to a periodic hill flow with massive separation, as well as fundamental fully-developed plane channel flows. In the calculations, various grid resolutions are used to investigate the model performance in detail. The present model provides encouraging results for further development of this kind of hybrid LES/RANS model.

AB - A hybrid approach connecting large eddy simulation (LES) with the Reynolds-averaged Navier-Stokes (RANS) modeling in the near-wall region is studied. In contrast to most of the previous studies that have employed linear eddy-viscosity models, in this study, an advanced non-linear eddy-viscosity model is introduced to resolve the near-wall stress anisotropy more correctly. The proposed model is applied to a periodic hill flow with massive separation, as well as fundamental fully-developed plane channel flows. In the calculations, various grid resolutions are used to investigate the model performance in detail. The present model provides encouraging results for further development of this kind of hybrid LES/RANS model.

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M3 - Paper

AN - SCOPUS:80054990195

SP - 1153

EP - 1158

T2 - 4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4

Y2 - 27 June 2005 through 29 June 2005

ER -

An investigation of hybrid LES/RANS models for predicting flow fields with separation

Abstract

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All Science Journal Classification (ASJC) codes

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