About: Proper Orthogonal Decomposition of Turbulent Flow above Urban Area

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This contribution describes the character of turbulent flow generated above series of street canyons in wind-channel. Main concern is to clarify how intermittent dynamics of the flow determines the ventilation process inside the canyon. Since geometry of building around street canyon significantly affects the flow regime, two shapes of building are studied and comparison of these two regimes is done. During experiment, velocity data are measured using PIV with high-repetition rate. Over than three thousand snapshots of instantaneous velocity are then analysed by Proper Orthogonal Decomposition (POD). This method reveals the measure of coherence of the flow and decomposes the individual snapshots into dynamics modes. For example, the first mode in shear layer (localised at the roof level) contains almost 55% of global turbulent kinetic energy, what is an in This contribution describes the character of turbulent flow generated above series of street canyons in wind-channel. Main concern is to clarify how intermittent dynamics of the flow determines the ventilation process inside the canyon. Since geometry of building around street canyon significantly affects the flow regime, two shapes of building are studied and comparison of these two regimes is done. During experiment, velocity data are measured using PIV with high-repetition rate. Over than three thousand snapshots of instantaneous velocity are then analysed by Proper Orthogonal Decomposition (POD). This method reveals the measure of coherence of the flow and decomposes the individual snapshots into dynamics modes. For example, the first mode in shear layer (localised at the roof level) contains almost 55% of global turbulent kinetic energy, what is an in (en)
Title	Proper Orthogonal Decomposition of Turbulent Flow above Urban Area Proper Orthogonal Decomposition of Turbulent Flow above Urban Area (en)
skos:prefLabel	Proper Orthogonal Decomposition of Turbulent Flow above Urban Area Proper Orthogonal Decomposition of Turbulent Flow above Urban Area (en)
skos:notation	RIV/61388998:_____/11:00363627!RIV12-AV0-61388998
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z20760514)
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Kukačka, Libor Kellnerová, Radka Jaňour, Zbyněk Uruba, Václav Jurčáková, Klára
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	Ústav termomechaniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	224655
http://linked.open...ai/riv/idVysledku	RIV/61388998:_____/11:00363627
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	wind-channel; street canyons; flat roof; pitched roof; POD (en)
http://linked.open.../riv/klicoveSlovo	POD pitched roof street canyons wind-channel flat roof
http://linked.open...ontrolniKodProRIV	[2F883A3FABE9]
http://linked.open...v/mistoKonaniAkce	Praha
http://linked.open...i/riv/mistoVydani	Prague
http://linked.open...i/riv/nazevZdroje	Conference Topical Problems of Fluid Mechanics 2011
http://linked.open...in/vavai/riv/obor	DG
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2011
http://linked.open...iv/tvurceVysledku	Jaňour, Zbyněk Jurčáková, Klára Kellnerová, Radka Kukačka, Libor Uruba, Václav
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2011-02-16 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Complex dynamical systems in thermodynamics, fluid and solid mechanics
number of pages	2 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Ústav termomechaniky AV ČR
https://schema.org/isbn	978-80-87012-32-1

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