About: Influence of the turbulence representation at the inlet on the downstream flow pattern in LES of backward-facing step

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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. (en)
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 (en)
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 (en)
skos:notation	RIV/00216305:26210/11:PU95126!RIV12-MSM-26210___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(GA101/08/0096), S
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Volavý, Jaroslav
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoké učení technické v Brně / Fakulta strojního inženýrství
http://linked.open...dnocenehoVysledku	204660
http://linked.open...ai/riv/idVysledku	RIV/00216305:26210/11:PU95126
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Large Eddy Simulation, backward facing step, inlet boundary condition (en)
http://linked.open.../riv/klicoveSlovo	backward facing step inlet boundary condition Large Eddy Simulation
http://linked.open...ontrolniKodProRIV	[324726638ED5]
http://linked.open...v/mistoKonaniAkce	Jičín
http://linked.open...i/riv/mistoVydani	Liberec
http://linked.open...i/riv/nazevZdroje	Experimental fluid mechanics 2011: Conference proceedings
http://linked.open...in/vavai/riv/obor	BK
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Advanced Large Eddy Simulation modelling of particle-laden turbulent flow and shear-driven liquid wall film
http://linked.open...UplatneniVysledku	2011
http://linked.open...iv/tvurceVysledku	Forman, Matěj Jícha, Miroslav Volavý, Jaroslav
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2011-11-22 (xsd:date)
number of pages	5 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Technical university of Liberec
https://schema.org/isbn	978-80-7372-784-0
http://localhost/t...ganizacniJednotka	26210

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