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Statements

Subject Item
n2:RIV%2F00216305%3A26210%2F11%3APU95126%21RIV12-MSM-26210___
rdf:type
skos:Concept n13:Vysledek
dcterms:description
The impact of the choice of inlet boundary condition treatment on the fluid flow is studied in this work. The correct representation of the turbulence at the inlet to the domain is essential for the accuracy of Large Eddy Simulation. The inappropriate specification of the inlet velocity has significant effect on the downstream flow pattern. The case of backward-facing step was used as a test case. Three different approaches of the inlet boundary conditions were studied: uniform velocity profile, mean velocity profile of the fully developed channel flow and velocity obtained from mapping velocity from plane positioned behind the inlet back to the inlet. The results of the simulations were compared with experimental results. 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 impact of the choice of inlet boundary condition treatment on the fluid flow is studied in this work. The correct representation of the turbulence at the inlet to the domain is essential for the accuracy of Large Eddy Simulation. The inappropriate specification of the inlet velocity has significant effect on the downstream flow pattern. The case of backward-facing step was used as a test case. Three different approaches of the inlet boundary conditions were studied: uniform velocity profile, mean velocity profile of the fully developed channel flow and velocity obtained from mapping velocity from plane positioned behind the inlet back to the inlet. The results of the simulations were compared with experimental results. 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.
dcterms:title
Influence of the turbulence representation at the inlet on the downstream flow pattern in LES of backward-facing step Influence of the turbulence representation at the inlet on the downstream flow pattern in LES of backward-facing step
skos:prefLabel
Influence of the turbulence representation at the inlet on the downstream flow pattern in LES of backward-facing step Influence of the turbulence representation at the inlet on the downstream flow pattern in LES of backward-facing step
skos:notation
RIV/00216305:26210/11:PU95126!RIV12-MSM-26210___
n13:predkladatel
n14:orjk%3A26210
n4:aktivita
n11:S n11:P
n4:aktivity
P(GA101/08/0096), S
n4:dodaniDat
n22:2012
n4:domaciTvurceVysledku
n18:3247538
n4:druhVysledku
n16:D
n4:duvernostUdaju
n6:S
n4:entitaPredkladatele
n15:predkladatel
n4:idSjednocenehoVysledku
204660
n4:idVysledku
RIV/00216305:26210/11:PU95126
n4:jazykVysledku
n12:eng
n4:klicovaSlova
Large Eddy Simulation, backward facing step, inlet boundary condition
n4:klicoveSlovo
n9:backward%20facing%20step n9:inlet%20boundary%20condition n9:Large%20Eddy%20Simulation
n4:kontrolniKodProRIV
[324726638ED5]
n4:mistoKonaniAkce
Jičín
n4:mistoVydani
Liberec
n4:nazevZdroje
Experimental fluid mechanics 2011: Conference proceedings
n4:obor
n5:BK
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
3
n4:projekt
n21:GA101%2F08%2F0096
n4:rokUplatneniVysledku
n22:2011
n4:tvurceVysledku
Jícha, Miroslav Volavý, Jaroslav Forman, Matěj
n4:typAkce
n10:WRD
n4:zahajeniAkce
2011-11-22+01:00
s:numberOfPages
5
n17:hasPublisher
Technical university of Liberec
n20:isbn
978-80-7372-784-0
n8:organizacniJednotka
26210