Detail publikace
Large Eddy Simulation of backward facing step
VOLAVÝ, J. JÍCHA, M.
Český název
Large Eddy Simulation of backward facing step
Anglický název
Large Eddy Simulation of backward facing step
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
en
Originální abstrakt
Large Eddy Simulations of backward facing step were performed. One of the difficulties of Large Eddy Simulation is correct representation of the turbulence on the inlet to the region. Therefore the simulations were done using different approaches to the inlet boundary condition. The impact of the choice of inlet boundary condition treatment on the fluid flow is consequently studied. It has shown, that using uniform velocity profile on inlet and even prescribing turbulent mean velocity profile without proper representation of turbulence fluctuations leads to unrealistic results. The only approach used in this work which gives sufficiently accurate solution is direct mapping of velocity from plane positioned behind the inlet back to the inlet.
Český abstrakt
Large Eddy Simulations of backward facing step were performed. One of the difficulties of Large Eddy Simulation is correct representation of the turbulence on the inlet to the region. Therefore the simulations were done using different approaches to the inlet boundary condition. The impact of the choice of inlet boundary condition treatment on the fluid flow is consequently studied. It has shown, that using uniform velocity profile on inlet and even prescribing turbulent mean velocity profile without proper representation of turbulence fluctuations leads to unrealistic results. The only approach used in this work which gives sufficiently accurate solution is direct mapping of velocity from plane positioned behind the inlet back to the inlet.
Anglický abstrakt
Large Eddy Simulations of backward facing step were performed. One of the difficulties of Large Eddy Simulation is correct representation of the turbulence on the inlet to the region. Therefore the simulations were done using different approaches to the inlet boundary condition. The impact of the choice of inlet boundary condition treatment on the fluid flow is consequently studied. It has shown, that using uniform velocity profile on inlet and even prescribing turbulent mean velocity profile without proper representation of turbulence fluctuations leads to unrealistic results. The only approach used in this work which gives sufficiently accurate solution is direct mapping of velocity from plane positioned behind the inlet back to the inlet.
Klíčová slova anglicky
Large Eddy Simulation, inlet boundary condition
Rok RIV
2011
Vydáno
22.06.2011
Nakladatel
Technikcá univerzita v Liberci
Místo
Liberec
ISBN
978-80-7372-747-5
Kniha
30, Setkání kateder mechaniky tekutin a termomechaniky
Číslo edice
1
Strany od–do
269–272
Počet stran
4
BIBTEX
@inproceedings{BUT74076,
author="Jaroslav {Volavý} and Miroslav {Jícha},
title="Large Eddy Simulation of backward facing step",
booktitle="30, Setkání kateder mechaniky tekutin a termomechaniky",
year="2011",
month="June",
pages="269--272",
publisher="Technikcá univerzita v Liberci",
address="Liberec",
isbn="978-80-7372-747-5"
}