About: Stability of The Steady Flow in Rotationally Symmetrical Domain

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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	Perturbation analysis with a linear approach of the flow in cylindrical domain was carried out in this paper. Analysis is based on Euler equations for inviscid fluid and continuity equation in rotating frame of reference. Eigen mode shapes of velocities visualize the flow patterns and eigen mode shapes of the cavitating vortex rope show origin of the elliptical vortex rope cross-section. Investigation confirms that boundary conditions have dominant effect on steady flow stability. Results indicate that careful design of the runner and the draft tube can lead to reduction of the instability consequences or to shifting the instability to different operational ranges. Perturbation analysis with a linear approach of the flow in cylindrical domain was carried out in this paper. Analysis is based on Euler equations for inviscid fluid and continuity equation in rotating frame of reference. Eigen mode shapes of velocities visualize the flow patterns and eigen mode shapes of the cavitating vortex rope show origin of the elliptical vortex rope cross-section. Investigation confirms that boundary conditions have dominant effect on steady flow stability. Results indicate that careful design of the runner and the draft tube can lead to reduction of the instability consequences or to shifting the instability to different operational ranges. (en) Byla provedena analýza stability lineárního problému v rotačně symetrické oblasti, vycházející z Eulerovy rovnice a rovnice kontinuity v rotujícím souřadném systému. Výsledné vlastní tvary kmitu vizualizují vznik eliptického tvaru kavitujícího vírového copu. Analýza potvrdila dominantní vliv okrajových podmínek na stabilitu proudění. Je zřejmé, že vhodný návrh oběžného kola a sací trouby může nestabilitu potlačit nebo ji vymezit do jiné provozní oblasti. (cs)
Title	Stability of The Steady Flow in Rotationally Symmetrical Domain Stabilita stacionárního proudění v rotačně symetrické oblasti (cs) Stability of The Steady Flow in Rotationally Symmetrical Domain (en)
skos:prefLabel	Stability of The Steady Flow in Rotationally Symmetrical Domain Stabilita stacionárního proudění v rotačně symetrické oblasti (cs) Stability of The Steady Flow in Rotationally Symmetrical Domain (en)
skos:notation	RIV/00216305:26210/07:PU71252!RIV08-MSM-26210___
http://linked.open.../vavai/riv/strany	93-100
http://linked.open...avai/riv/aktivita	S
http://linked.open...avai/riv/aktivity	S
http://linked.open...iv/cisloPeriodika	6
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Koutník, Jiří Pochylý, František Habán, Vladimír Rudolf, Pavel
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	Vysoké učení technické v Brně / Fakulta strojního inženýrství
http://linked.open...dnocenehoVysledku	451972
http://linked.open...ai/riv/idVysledku	RIV/00216305:26210/07:PU71252
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Swirl, stability, rotationally symmetrical, eigen value, cylinder, draft tube, elliptical (en)
http://linked.open.../riv/klicoveSlovo	Swirl elliptical stability cylinder draft tube eigen value rotationally symmetrical
http://linked.open...odStatuVydavatele	RO - Rumunsko
http://linked.open...ontrolniKodProRIV	[719152B86385]
http://linked.open...i/riv/nazevZdroje	Scientific Bulletin of the %22Politehnica%22 University of Timisoara
http://linked.open...in/vavai/riv/obor	BK
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2007
http://linked.open...v/svazekPeriodika	52
http://linked.open...iv/tvurceVysledku	Habán, Vladimír Pochylý, František Rudolf, Pavel Koutník, Jiří Krüger, Klaus
issn	1224-6077
number of pages	8 (xsd:int)
http://localhost/t...ganizacniJednotka	26210
is http://linked.open...avai/riv/vysledek of	Stability of The Steady Flow in Rotationally Symmetrical Domain Stability of The Steady Flow in Rotationally Symmetrical Domain Stability of The Steady Flow in Rotationally Symmetrical Domain

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