About: Unsteady Flow in the Draft Tube with Elbow Part B

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About: Unsteady Flow in the Draft Tube with Elbow Part B - Numerical Investigation Goto Sponge NotDistinct Permalink

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	The unsteady numerical simulation of the flow in the draft tube was performed in order to find out a suitable flow model being able to predict the precessing vortex core. The CFD code FLUENT was used for this flow analysis. The investigated computational domain corresponds to the Francis turbine draft tube for a runner less operation. The radial and tangential velocities on the radial inlet are simulating the free vortex. The domain is extended to the large tank in order to avoid ill-possed outlet boundary condition. The results have confirmed that RSM turbulence model can predict the origin and behavior of the precessing vortex core in the draft tube. The vortex motion and the precessing frequency can be analyzed. The results of the numerical simulation correspond to the conclusions based on the experimental observation. Finally different definitions for vortex identification are discussed. The unsteady numerical simulation of the flow in the draft tube was performed in order to find out a suitable flow model being able to predict the precessing vortex core. The CFD code FLUENT was used for this flow analysis. The investigated computational domain corresponds to the Francis turbine draft tube for a runner less operation. The radial and tangential velocities on the radial inlet are simulating the free vortex. The domain is extended to the large tank in order to avoid ill-possed outlet boundary condition. The results have confirmed that RSM turbulence model can predict the origin and behavior of the precessing vortex core in the draft tube. The vortex motion and the precessing frequency can be analyzed. The results of the numerical simulation correspond to the conclusions based on the experimental observation. Finally different definitions for vortex identification are discussed. (en)
Title	Unsteady Flow in the Draft Tube with Elbow Part B - Numerical Investigation Unsteady Flow in the Draft Tube with Elbow Part B - Numerical Investigation (en)
skos:prefLabel	Unsteady Flow in the Draft Tube with Elbow Part B - Numerical Investigation Unsteady Flow in the Draft Tube with Elbow Part B - Numerical Investigation (en)
skos:notation	RIV/00216305:26210/01:PU24185!RIV11-MSM-26210___
http://linked.open...avai/riv/aktivita	N V Z
http://linked.open...avai/riv/aktivity	N, V, Z(MSM 262100001)
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Rudolf, Pavel
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	699624
http://linked.open...ai/riv/idVysledku	RIV/00216305:26210/01:PU24185
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	draft tube, unsteady, vortex, turbulence modeling, helicity (en)
http://linked.open.../riv/klicoveSlovo	vortex draft tube helicity unsteady turbulence modeling
http://linked.open...ontrolniKodProRIV	[115871945B24]
http://linked.open...v/mistoKonaniAkce	Trondheim
http://linked.open...i/riv/mistoVydani	Trondheim
http://linked.open...i/riv/nazevZdroje	Proceedings of IAHR Workgroup Meeting
http://linked.open...in/vavai/riv/obor	BK
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	1 (xsd:int)
http://linked.open...UplatneniVysledku	2001
http://linked.open...iv/tvurceVysledku	Rudolf, Pavel
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2001-06-26 (xsd:date)
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20262100001
number of pages	155 (xsd:int)
http://purl.org/ne...btex#hasPublisher	NTNU Trondheim
http://localhost/t...ganizacniJednotka	26210

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