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Statements

Subject Item
n2:RIV%2F00216305%3A26210%2F10%3APU88853%21RIV11-GA0-26210___
rdf:type
skos:Concept n7:Vysledek
dcterms:description
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 paramete 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 paramete
dcterms:title
New Inlet Boundary Condition Treatment for Large Eddy Simulation New Inlet Boundary Condition Treatment for Large Eddy Simulation
skos:prefLabel
New Inlet Boundary Condition Treatment for Large Eddy Simulation New Inlet Boundary Condition Treatment for Large Eddy Simulation
skos:notation
RIV/00216305:26210/10:PU88853!RIV11-GA0-26210___
n3:aktivita
n21:S n21:P
n3:aktivity
P(GA101/08/0096), S
n3:dodaniDat
n4:2011
n3:domaciTvurceVysledku
n13:4040619 n13:3247538 n13:4397886
n3:druhVysledku
n9:D
n3:duvernostUdaju
n19:S
n3:entitaPredkladatele
n8:predkladatel
n3:idSjednocenehoVysledku
274692
n3:idVysledku
RIV/00216305:26210/10:PU88853
n3:jazykVysledku
n6:eng
n3:klicovaSlova
Inlet boundary condition, Large Eddy Simulation
n3:klicoveSlovo
n11:Large%20Eddy%20Simulation n11:Inlet%20boundary%20condition
n3:kontrolniKodProRIV
[74AF28F663F5]
n3:mistoKonaniAkce
Praha
n3:mistoVydani
Praha
n3:nazevZdroje
Colloquium Fluid Dynamics 2010
n3:obor
n12:BK
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:projekt
n14:GA101%2F08%2F0096
n3:rokUplatneniVysledku
n4:2010
n3:tvurceVysledku
Forman, Matěj Jícha, Miroslav Volavý, Jaroslav
n3:typAkce
n10:EUR
n3:zahajeniAkce
2010-10-20+02:00
s:numberOfPages
43
n20:hasPublisher
Ústav termomechaniky AV ČR
n18:isbn
978-80-87012-27-7
n16:organizacniJednotka
26210