Detail publikace
Structure of Flow Fields Downstream of Two Different Swirl Generators
ŠTEFAN, D. RUDOLF, P. MUNTEAN, S. SUSAN-RESIGA, R.
Anglický název
Structure of Flow Fields Downstream of Two Different Swirl Generators
Typ
Článek recenzovaný mimo WoS a Scopus
Jazyk
en
Originální abstrakt
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 amplitude-frequency spectra of static wall pressure.
Klíčová slova anglicky
swirl generator, vortex rope, velocity profiles, vorticity, pressure pulsations
Vydáno
2014-02-05
ISSN
1805-4633
Časopis
Engineering Mechanics
Ročník
20
Číslo
5
Strany od–do
339–353
Počet stran
15
BIBTEX
@article{BUT105575,
author="ŠTEFAN, D. and RUDOLF, P. and MUNTEAN, S. and SUSAN-RESIGA, R.",
title="Structure of Flow Fields Downstream of Two Different Swirl Generators",
journal="Engineering Mechanics",
year="2014",
volume="20",
number="5",
pages="339--353",
issn="1805-4633",
url="http://www.engineeringmechanics.cz/pdf/20_5_339.pdf"
}