Detail publikace

Numerická a experimentální studie vířivého proudění v kónickém difuzoru

ŠTEFAN, D. ZUBÍK, P. HUDEC, M. RUDOLF, P.

Český název

Numerická a experimentální studie vířivého proudění v kónickém difuzoru

Anglický název

Numerical and experimental investigation of swirling flow in a conical diffuser

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

en

Originální abstrakt

The decelerated swirling flow often breaks down into helical structure which is unstable and causes unsteady velocity and pressure fields. The numerical and experimental investigation of this flow pattern is carried out on the experimental apparatus consisting of the swirl generator (producing a strong swirling flow) and the transparent conical diffuser (where the helical structure can be observed). The open source CFD software OpenFOAM employing realizable k-epsilon turbulence model is used for the numerical simulations. The experimental measurements are focused on LDA measurements of velocity profiles in the diffuser cross-sections. Agreements between numerical end experimental results are discussed.

Český abstrakt

The decelerated swirling flow often breaks down into helical structure which is unstable and causes unsteady velocity and pressure fields. The numerical and experimental investigation of this flow pattern is carried out on the experimental apparatus consisting of the swirl generator (producing a strong swirling flow) and the transparent conical diffuser (where the helical structure can be observed). The open source CFD software OpenFOAM employing realizable k-epsilon turbulence model is used for the numerical simulations. The experimental measurements are focused on LDA measurements of velocity profiles in the diffuser cross-sections. Agreements between numerical end experimental results are discussed.

Anglický abstrakt

The decelerated swirling flow often breaks down into helical structure which is unstable and causes unsteady velocity and pressure fields. The numerical and experimental investigation of this flow pattern is carried out on the experimental apparatus consisting of the swirl generator (producing a strong swirling flow) and the transparent conical diffuser (where the helical structure can be observed). The open source CFD software OpenFOAM employing realizable k-epsilon turbulence model is used for the numerical simulations. The experimental measurements are focused on LDA measurements of velocity profiles in the diffuser cross-sections. Agreements between numerical end experimental results are discussed.

Klíčová slova česky

vířivé proudění, kavitace, LDA, OpenFOAM

Klíčová slova anglicky

swirling flow, cavitation, LDA, OpenFOAM

Rok RIV

2015

Vydáno

06.05.2015

Nakladatel

EPJ Web of Conferences

ISSN

2100-014X

Kniha

EFM14 - Experimental Fluid Mechanics 2014

Ročník

2015

Číslo

92

Strany od–do

1–5

Počet stran

5

BIBTEX


@inproceedings{BUT114433,
  author="David {Štefan} and Pavel {Zubík} and Martin {Hudec} and Pavel {Rudolf},
  title="Numerical and experimental investigation of swirling flow in a conical diffuser",
  booktitle="EFM14 - Experimental Fluid Mechanics 2014",
  year="2015",
  volume="2015",
  number="92",
  month="May",
  pages="1--5",
  publisher="EPJ Web of Conferences",
  issn="2100-014X"
}