Publication detail
Numerical and experimental investigation of swirling flow in a conical diffuser
ŠTEFAN, D. ZUBÍK, P. HUDEC, M. RUDOLF, P.
Czech title
Numerická a experimentální studie vířivého proudění v kónickém difuzoru
English title
Numerical and experimental investigation of swirling flow in a conical diffuser
Type
conference paper
Language
en
Original abstract
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.
Czech abstract
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.
English abstract
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.
Keywords in Czech
vířivé proudění, kavitace, LDA, OpenFOAM
Keywords in English
swirling flow, cavitation, LDA, OpenFOAM
RIV year
2015
Released
06.05.2015
Publisher
EPJ Web of Conferences
ISSN
2100-014X
Book
EFM14 - Experimental Fluid Mechanics 2014
Volume
2015
Number
92
Pages from–to
1–5
Pages count
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"
}