An investigation of SGS-stress anisotropy modeling in complex turbulent flow fields

Research output: Contribution to journalConference article

Abstract

An effective model expression for representing the anisotropy of the subgrid-scale (SGS) stress used in large eddy simulation was investigated. The present SGS-stress model was constructed by combining a representative isotropic linear eddy-viscosity model (EVM) with an extra anisotropic term. This extra term was based on a residual term after subtracting an EVM form from the Bardina's SGS-Reynolds-stress model (Bardina et al., AIAA Paper, 80-1357, 1980). The resultant term yields no undesirable energy transfer. Thus, the present anisotropic term is expected to have no serious effect on computational stability, even if highly anisotropic SGS-stress components are returned. In order to discuss the model performance, the present SGS model was applied to a fundamental plane channel flow and a plane impinging jet.

Original languageEnglish
Pages (from-to)2081-2088
Number of pages8
JournalProceedings of the International Symposium on Turbulence, Heat and Mass Transfer
Volume2012-September
DOIs
Publication statusPublished - Jan 1 2012
Event7th International Symposium On Turbulence, Heat and Mass Transfer, THMT 2012 - Palermo, Italy
Duration: Sep 24 2012Sep 27 2012

Fingerprint

Turbulent flow
Flow fields
Anisotropy
Viscosity
Large eddy simulation
Channel flow
Energy transfer

All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes

Cite this

An investigation of SGS-stress anisotropy modeling in complex turbulent flow fields. / Abe, K.

In: Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer, Vol. 2012-September, 01.01.2012, p. 2081-2088.

Research output: Contribution to journalConference article

@article{8d0ddfbb2c3c41cda80426ff9bcfaf0f,
title = "An investigation of SGS-stress anisotropy modeling in complex turbulent flow fields",
abstract = "An effective model expression for representing the anisotropy of the subgrid-scale (SGS) stress used in large eddy simulation was investigated. The present SGS-stress model was constructed by combining a representative isotropic linear eddy-viscosity model (EVM) with an extra anisotropic term. This extra term was based on a residual term after subtracting an EVM form from the Bardina's SGS-Reynolds-stress model (Bardina et al., AIAA Paper, 80-1357, 1980). The resultant term yields no undesirable energy transfer. Thus, the present anisotropic term is expected to have no serious effect on computational stability, even if highly anisotropic SGS-stress components are returned. In order to discuss the model performance, the present SGS model was applied to a fundamental plane channel flow and a plane impinging jet.",
author = "K. Abe",
year = "2012",
month = "1",
day = "1",
doi = "10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.2150",
language = "English",
volume = "2012-September",
pages = "2081--2088",
journal = "Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer",
issn = "2377-2816",

}

TY - JOUR

T1 - An investigation of SGS-stress anisotropy modeling in complex turbulent flow fields

AU - Abe, K.

PY - 2012/1/1

Y1 - 2012/1/1

N2 - An effective model expression for representing the anisotropy of the subgrid-scale (SGS) stress used in large eddy simulation was investigated. The present SGS-stress model was constructed by combining a representative isotropic linear eddy-viscosity model (EVM) with an extra anisotropic term. This extra term was based on a residual term after subtracting an EVM form from the Bardina's SGS-Reynolds-stress model (Bardina et al., AIAA Paper, 80-1357, 1980). The resultant term yields no undesirable energy transfer. Thus, the present anisotropic term is expected to have no serious effect on computational stability, even if highly anisotropic SGS-stress components are returned. In order to discuss the model performance, the present SGS model was applied to a fundamental plane channel flow and a plane impinging jet.

AB - An effective model expression for representing the anisotropy of the subgrid-scale (SGS) stress used in large eddy simulation was investigated. The present SGS-stress model was constructed by combining a representative isotropic linear eddy-viscosity model (EVM) with an extra anisotropic term. This extra term was based on a residual term after subtracting an EVM form from the Bardina's SGS-Reynolds-stress model (Bardina et al., AIAA Paper, 80-1357, 1980). The resultant term yields no undesirable energy transfer. Thus, the present anisotropic term is expected to have no serious effect on computational stability, even if highly anisotropic SGS-stress components are returned. In order to discuss the model performance, the present SGS model was applied to a fundamental plane channel flow and a plane impinging jet.

UR - http://www.scopus.com/inward/record.url?scp=85073488203&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85073488203&partnerID=8YFLogxK

U2 - 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.2150

DO - 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.2150

M3 - Conference article

AN - SCOPUS:85073488203

VL - 2012-September

SP - 2081

EP - 2088

JO - Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer

JF - Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer

SN - 2377-2816

ER -