Publication detail
Vorticity Confinement method applied to flow around an Ahmed body and comparison with experiments
FORMAN, M. JASAK, H. VOLAVÝ, J. JÍCHA, M. OTHMER, C. BENSLER, H. P.
Czech title
Metoda Vorticity Confinment aplikovaná na proudění okolo Ahmedova tělesa a porovnání s experimenty
English title
Vorticity Confinement method applied to flow around an Ahmed body and comparison with experiments
Type
journal article - other
Language
en
Original abstract
In the paper, Vorticity Confinement method (VC) is presented for the calculation of flow field around a bluff body. VC method was originally proposed by Steinhoff et al. for the computation of thin vortical regions in the high Reynolds number incompressible flows. Steinhoff claims that VC is capable of capturing most of the main features of high-Re turbulent flows without the massive mesh resolution needed for Reynolds-Averaged Navier-Stokes (RANS) solutions or Large Eddy Simulation (LES). The aim of the method is to capture small-scale vortical structures efficiently. The presented study assesses the VC method, for external aerodynamics presented here on a well documented simplified car – Ahmed bluff body with different slant angles, namely 25 and 35 deg.
Czech abstract
V článku je prezentována metoda Vorticity Confinement pro výpočet proudového pole okoloo Ahmedova tělesa. Metoda VC byla původně navržena Steinhoffem et al. pro výpočet tenké vírové oblasti při vysokých Re číslech v nestlačitelném proudění. Steinhoff tvrdí, že VC je schopna zachytit většinu hlavních rysů turbulentního proudění s vysokými Re čísly bez masivního zvětšení sítě, potřebné pro RANS nebo LES řešení. Cíl metody je účinně zachytit vírové struktury malých měřítek. Prezentovaná studie hodnotí VC metodu pro vnější obtékání Ahmedova tělesa (zjednodušený tvar automobilu) pro dva různé úhly sklonu 25 a 35 stupňů.
English abstract
In the paper, Vorticity Confinement method (VC) is presented for the calculation of flow field around a bluff body. VC method was originally proposed by Steinhoff et al. for the computation of thin vortical regions in the high Reynolds number incompressible flows. Steinhoff claims that VC is capable of capturing most of the main features of high-Re turbulent flows without the massive mesh resolution needed for Reynolds-Averaged Navier-Stokes (RANS) solutions or Large Eddy Simulation (LES). The aim of the method is to capture small-scale vortical structures efficiently. The presented study assesses the VC method, for external aerodynamics presented here on a well documented simplified car – Ahmed bluff body with different slant angles, namely 25 and 35 deg.
Keywords in Czech
Turbulentní proudění, Vorticity confinement, Ahmedovo těleso, experimenty
Keywords in English
Turbulent flow, Vorticity confinement, Ahmed body, experiments
RIV year
2010
Released
15.09.2010
Publisher
WIT Press
Location
Ashurst, UK
ISSN
1743-3533
Volume
69
Number
9
Pages from–to
55–66
Pages count
11
BIBTEX
@article{BUT89668,
author="Matěj {Forman} and Jaroslav {Volavý} and Miroslav {Jícha} and Carsten {Othmer} and Henry Paul {Bensler},
title="Vorticity Confinement method applied to flow around an Ahmed body and comparison with experiments",
year="2010",
volume="69",
number="9",
month="September",
pages="55--66",
publisher="WIT Press",
address="Ashurst, UK",
issn="1743-3533"
}