Detail publikace

Structure of Flow Fields Downstream of Two Different Swirll Generators

ŠTEFAN, D. RUDOLF, P. MUNTEAN, S. SUSAN-RESIGA, R.F.

Originální název

Structure of Flow Fields Downstream of Two Different Swirll Generators

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

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 amplitudefrequency spectra of static wall pressure.

Klíčová slova

swirl generator, vortex rope, velocity profile, vorticity, pressure fluctuations.

Autoři

ŠTEFAN, D.; RUDOLF, P.; MUNTEAN, S.; SUSAN-RESIGA, R.F.

Rok RIV

2012

Vydáno

14. 5. 2012

Místo

Prague

ISBN

978-80-86246-39-0

Kniha

Engineering Mechanics 2012, Book of Extended Abstracts

Strany od

326

Strany do

327

Strany počet

408

URL

http://www.engmech.cz/2012/proceedings/pdf/057_Stefan_D-FT.pdf

Plný text v Digitální knihovně

http://hdl.handle.net/11012/245284

BibTex

@inproceedings{BUT92005,
  author="ŠTEFAN, D. and RUDOLF, P. and MUNTEAN, S. and SUSAN-RESIGA, R.F.",
  title="Structure of Flow Fields Downstream of Two Different Swirll Generators",
  booktitle="Engineering Mechanics 2012, Book of Extended Abstracts",
  year="2012",
  pages="326--327",
  address="Prague",
  isbn="978-80-86246-39-0",
  url="http://www.engmech.cz/2012/proceedings/pdf/057_Stefan_D-FT.pdf"
}