Publication detail
Simulation of flow over a wavy solid surface: Comparison of turbulence models
KNOTEK, S. JÍCHA, M.
Czech title
Simulace proudění nad zvlněným pevným povrchem
English title
Simulation of flow over a wavy solid surface: Comparison of turbulence models
Type
conference paper
Language
en
Original abstract
The CFD simulation of air flow over solid sinusoidal surface is presented. The flow conditions defined by Reynolds number based on bulk velocity (Re=6760) and the ratio of the wave amplitude to the wavelength (0.05) induces turbulent flow with adverse pressure gradients. These are large enough to cause flow separation. For these reasons the appropriate Reynolds-Averaged Navier-Stokes models were used. The profiles of velocity components, pressure and wall shear stress are presented in comparison with Direct Numerical Simulations results.
Czech abstract
Článek prezentuje CFD simulaci proudění vzduchu nad pevným sinusoidálním povrchem. Podmínky proudění definované Reynoldsovým číslem (Re=6760) a daným poměrem amplitudy ku vlnové délce (0,05) indukují turbulentní režim prouděním s nepříznivým tlakovým gradientem a v důsledku toho separační oblast. Pro účely srovnání byly vybrány modely turbulence typu RANS. Profily tlaku, smykového napětí a rychlostí jsou porovnány s výsledky přístupu DNS.
English abstract
The CFD simulation of air flow over solid sinusoidal surface is presented. The flow conditions defined by Reynolds number based on bulk velocity (Re=6760) and the ratio of the wave amplitude to the wavelength (0.05) induces turbulent flow with adverse pressure gradients. These are large enough to cause flow separation. For these reasons the appropriate Reynolds-Averaged Navier-Stokes models were used. The profiles of velocity components, pressure and wall shear stress are presented in comparison with Direct Numerical Simulations results.
Keywords in Czech
CFD, zvlněný povrch, turbulentní proudění
Keywords in English
CFD, wavy surface, turbulent flow
RIV year
2011
Released
22.11.2011
Publisher
Technical University of Liberec
Location
Jičín
ISBN
978-80-7372-784-0
Book
Experimental Fluid Mechanics 2011
Pages from–to
747–753
Pages count
7
BIBTEX
@inproceedings{BUT75138,
author="Stanislav {Knotek} and Miroslav {Jícha},
title="Simulation of flow over a wavy solid surface: Comparison of turbulence models",
booktitle="Experimental Fluid Mechanics 2011",
year="2011",
month="November",
pages="747--753",
publisher="Technical University of Liberec",
address="Jičín",
isbn="978-80-7372-784-0"
}