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Statements

Subject Item
n2:RIV%2F00216305%3A26210%2F12%3APU98477%21RIV13-GA0-26210___
rdf:type
n10:Vysledek skos:Concept
rdfs:seeAlso
http://www.engmech.cz/2012/proceedings/pdf/057_Stefan_D-FT.pdf
dcterms:description
This paper discusses the comparison of the flow fields downstream of two different swirl generators. Both swirl generators are used to imitate the flow at the exit of the hydraulic turbine runner and study spatio-temporal behaviour of the swirling flow in the draft tube (i.e. outlet diffuser part of the hydraulic turbine), which undergoes breakdown into vortex rope. Unsteady CFD computations are carried out for identical Reynolds number. Resulting velocity and vorticity profiles are correlated with the structure of the vortex rope. Difference in excited pressure pulsations is illustrated on amplitudefrequency spectra of static wall pressure. This paper discusses the comparison of the flow fields downstream of two different swirl generators. Both swirl generators are used to imitate the flow at the exit of the hydraulic turbine runner and study spatio-temporal behaviour of the swirling flow in the draft tube (i.e. outlet diffuser part of the hydraulic turbine), which undergoes breakdown into vortex rope. Unsteady CFD computations are carried out for identical Reynolds number. Resulting velocity and vorticity profiles are correlated with the structure of the vortex rope. Difference in excited pressure pulsations is illustrated on amplitudefrequency spectra of static wall pressure.
dcterms:title
Structure of Flow Fields Downstream of Two Different Swirll Generators Structure of Flow Fields Downstream of Two Different Swirll Generators
skos:prefLabel
Structure of Flow Fields Downstream of Two Different Swirll Generators Structure of Flow Fields Downstream of Two Different Swirll Generators
skos:notation
RIV/00216305:26210/12:PU98477!RIV13-GA0-26210___
n10:predkladatel
n18:orjk%3A26210
n3:aktivita
n22:S n22:P
n3:aktivity
P(GA101/09/1715), S
n3:dodaniDat
n12:2013
n3:domaciTvurceVysledku
n21:8024197 n21:5409594
n3:druhVysledku
n17:D
n3:duvernostUdaju
n4:S
n3:entitaPredkladatele
n5:predkladatel
n3:idSjednocenehoVysledku
171891
n3:idVysledku
RIV/00216305:26210/12:PU98477
n3:jazykVysledku
n19:eng
n3:klicovaSlova
swirl generator, vortex rope, velocity profile, vorticity, pressure fluctuations.
n3:klicoveSlovo
n8:velocity%20profile n8:pressure%20fluctuations. n8:vortex%20rope n8:vorticity n8:swirl%20generator
n3:kontrolniKodProRIV
[73C8A025B457]
n3:mistoKonaniAkce
Svratka
n3:mistoVydani
Prague
n3:nazevZdroje
Engineering Mechanics 2012, Book of Extended Abstracts
n3:obor
n16:BK
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:projekt
n13:GA101%2F09%2F1715
n3:rokUplatneniVysledku
n12:2012
n3:tvurceVysledku
Štefan, David Rudolf, Pavel
n3:typAkce
n6:WRD
n3:zahajeniAkce
2012-05-14+02:00
s:numberOfPages
408
n11:hasPublisher
Neuveden
n20:isbn
978-80-86246-39-0
n23:organizacniJednotka
26210