Detail publikace
New Inlet Boundary Condition Treatment for Large Eddy Simulation
VOLAVÝ, J. FORMAN, M. JÍCHA, M.
Anglický název
New Inlet Boundary Condition Treatment for Large Eddy Simulation
Typ
Stať ve sborníku v databázi WoS či Scopus
Jazyk
en
Originální abstrakt
This work describes new treatment of inlet boundary condition for Large Eddy Simulation. The turbulence on the inlet is forced by generation of the force in particular points of the computational domain and this force is added to the momentum equations as a source term. For the generation of the force is used Ornstein-Uhlenbeck process. Ornstein-Uhlenbeck process describes the distribution of velocity fluctuations in homogeneous turbulence flow. Instead of generating random velocity fluctuations which would lead to continuity error the Ornstein-Uhlenbeck process is used here for generating the forcing force. This approach allows easy implementation in solvers of turbulent flows. This proposed inlet boundary condition was implemented in Large Eddy Simulation solver in open-source program OpenFOAM and then used for simulation of channel flow. The results are validated against DNS data. The results obtained with proposed forcing show good agreement with DNS results. The part of this work is also parameter study of influence of each parameter on witch depend Ornstein-Uhlenbeck process and their impact on the resulting turbulence field
Klíčová slova anglicky
Inlet boundary condition, Large Eddy Simulation
Vydáno
2010-10-20
Nakladatel
Institute of thermomechanics, AS CR
Místo
Praha
ISBN
978-80-87012-27-7
Kniha
Colloquium Fluid Dynamics 2010
Strany od–do
37–38
Počet stran
43
BIBTEX
@inproceedings{BUT35485,
author="Jaroslav {Volavý} and Matěj {Forman} and Miroslav {Jícha}",
title="New Inlet Boundary Condition Treatment for Large Eddy Simulation",
booktitle="Colloquium Fluid Dynamics 2010",
year="2010",
pages="37--38",
publisher="Institute of thermomechanics, AS CR",
address="Praha",
isbn="978-80-87012-27-7"
}