The Evaluation of the Boundary Vorticity by URANS and LES Methods

The Evaluation of the Boundary Vorticity by URANS and LES Methods

The role of concentrated vorticity in fluid dynamics phenomena, concerning both the vorticity creation at the boundary and the response to the flow field is not wholly understood. The Lighthill describes the vorticity production at a solid boundary as a slow diffusion of the vorticity similar to the...

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Main Authors: Ion MALAEL, Horia DUMITRESCU, Vladimir CARDOS
Format: Article
Language:English
Published: National Institute for Aerospace Research “Elie Carafoli” - INCAS 2015-12-01
Series:INCAS Bulletin
Subjects:
Boundary layer
Velocity profile
URANS
LES
Online Access:http://bulletin.incas.ro/files/malael__dumitrescu__cardos_vol_7_iss_4.pdf
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spelling doaj-3ad5b8dff08045aab1f477cdc30266d52020-11-24T23:40:59ZengNational Institute for Aerospace Research “Elie Carafoli” - INCASINCAS Bulletin2066-82012247-45282015-12-017410310910.13111/2066-8201.2015.7.4.10The Evaluation of the Boundary Vorticity by URANS and LES MethodsIon MALAEL0Horia DUMITRESCU1Vladimir CARDOS2National Research and Development Institute for Gas Turbine, COMOTI, Bucharest, Romania ion.malael@comoti.ro“Gheorghe Mihoc – Caius Iacob” Institute of Mathematical Statistics and Applied Mathematics of the Romanian Academy Calea 13 Septembrie no. 13, 050711 Bucharest, Romania dumitrescu.horia@yahoo.com“Gheorghe Mihoc – Caius Iacob” Institute of Mathematical Statistics and Applied Mathematics of the Romanian Academy Calea 13 Septembrie no. 13, 050711 Bucharest, Romania, v_cardos@yahoo.ca*The role of concentrated vorticity in fluid dynamics phenomena, concerning both the vorticity creation at the boundary and the response to the flow field is not wholly understood. The Lighthill describes the vorticity production at a solid boundary as a slow diffusion of the vorticity similar to the Fourier heat conduction. In the paper it is shown that this mechanism associated to URANS method is not applied to the concentrated vorticity case, and the LES method better reproduces the flows involving concentrations vorticity.http://bulletin.incas.ro/files/malael__dumitrescu__cardos_vol_7_iss_4.pdfBoundary layerVelocity profileURANSLES
collection DOAJ
language English
format Article
sources DOAJ
author Ion MALAEL
Horia DUMITRESCU
Vladimir CARDOS
spellingShingle Ion MALAEL
Horia DUMITRESCU
Vladimir CARDOS
The Evaluation of the Boundary Vorticity by URANS and LES Methods
INCAS Bulletin
Boundary layer
Velocity profile
URANS
LES
author_facet Ion MALAEL
Horia DUMITRESCU
Vladimir CARDOS
author_sort Ion MALAEL
title The Evaluation of the Boundary Vorticity by URANS and LES Methods
title_short The Evaluation of the Boundary Vorticity by URANS and LES Methods
title_full The Evaluation of the Boundary Vorticity by URANS and LES Methods
title_fullStr The Evaluation of the Boundary Vorticity by URANS and LES Methods
title_full_unstemmed The Evaluation of the Boundary Vorticity by URANS and LES Methods
title_sort evaluation of the boundary vorticity by urans and les methods
publisher National Institute for Aerospace Research “Elie Carafoli” - INCAS
series INCAS Bulletin
issn 2066-8201
2247-4528
publishDate 2015-12-01
description The role of concentrated vorticity in fluid dynamics phenomena, concerning both the vorticity creation at the boundary and the response to the flow field is not wholly understood. The Lighthill describes the vorticity production at a solid boundary as a slow diffusion of the vorticity similar to the Fourier heat conduction. In the paper it is shown that this mechanism associated to URANS method is not applied to the concentrated vorticity case, and the LES method better reproduces the flows involving concentrations vorticity.
topic Boundary layer
Velocity profile
URANS
LES
url http://bulletin.incas.ro/files/malael__dumitrescu__cardos_vol_7_iss_4.pdf
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AT vladimircardos theevaluationoftheboundaryvorticitybyuransandlesmethods
AT ionmalael evaluationoftheboundaryvorticitybyuransandlesmethods
AT horiadumitrescu evaluationoftheboundaryvorticitybyuransandlesmethods
AT vladimircardos evaluationoftheboundaryvorticitybyuransandlesmethods
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