About: The Effect of Inlet Pulsations on the Backward-Facing Step Flow

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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 experimental study of backward-facing step flow is focused on the transient flow regime (Reh is ranging from 30 to 1800). An unsteady flow pattern with several regions of flow separation downstream the step is investigated in a water channel with the most common expansion geometry (ER=2). The electrodiffusion technique of wall shear rate measurements is applied to recognize the flow structure behind the step. The sliding step configuration enables sufficient mapping of the near-wall flow region even if only two direction-sensitive probes are flush-mounted into the downstream channel walls. The wall shear rate profiles (at bottom and roof) are obtained under steady and pulsatile (frequency up to 3 Hz) flow conditions at the inlet. The inlet flow pulsations affect strongly the overall flow structure behind the step. Up to 80% reduction of the reattachment length is achieved by applying flow pulsations at the most effective frequency. This experimental study of backward-facing step flow is focused on the transient flow regime (Reh is ranging from 30 to 1800). An unsteady flow pattern with several regions of flow separation downstream the step is investigated in a water channel with the most common expansion geometry (ER=2). The electrodiffusion technique of wall shear rate measurements is applied to recognize the flow structure behind the step. The sliding step configuration enables sufficient mapping of the near-wall flow region even if only two direction-sensitive probes are flush-mounted into the downstream channel walls. The wall shear rate profiles (at bottom and roof) are obtained under steady and pulsatile (frequency up to 3 Hz) flow conditions at the inlet. The inlet flow pulsations affect strongly the overall flow structure behind the step. Up to 80% reduction of the reattachment length is achieved by applying flow pulsations at the most effective frequency. (en)
Title	The Effect of Inlet Pulsations on the Backward-Facing Step Flow The Effect of Inlet Pulsations on the Backward-Facing Step Flow (en)
skos:prefLabel	The Effect of Inlet Pulsations on the Backward-Facing Step Flow The Effect of Inlet Pulsations on the Backward-Facing Step Flow (en)
skos:notation	RIV/67985858:_____/10:00341764!RIV11-GA0-67985858
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA101/04/0745), P(GA104/08/0428), Z(AV0Z40720504)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Pěnkavová, Věra Tihon, Jaroslav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav chemických procesů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	256027
http://linked.open...ai/riv/idVysledku	RIV/67985858:_____/10:00341764
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	flow separation and reattachment; backward-facing step; wall shear stress (en)
http://linked.open.../riv/klicoveSlovo	wall shear stress backward-facing step flow separation and reattachment
http://linked.open...odStatuVydavatele	FR - Francouzská republika
http://linked.open...ontrolniKodProRIV	[397AE5DDFB9B]
http://linked.open...i/riv/nazevZdroje	European Journal of Mechanics B-Fluids
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Effect of the surface roughness, ohmic resistance, and electrode kinetics on autocalibration of electrodiffusion friction probes Diagnostics of the near-wall turbulence in beckward-facing step flows
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	29
http://linked.open...iv/tvurceVysledku	Pěnkavová, Věra Tihon, Jaroslav Pantzali, M.
http://linked.open...ain/vavai/riv/wos	000277554200006
http://linked.open...n/vavai/riv/zamer	Investigation of multiphase reacting systems for the design of processes important in synthesis and preparation of novel materials, in energy production and in environmental protection
issn	0997-7546
number of pages	12 (xsd:int)

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