THERMAL SCIENCE

International Scientific Journal

Miroslav H. Benišek

,

Dejan B. Ilić

,

Đorđe S. Čantrak

,

Ivan O. Božić

INVESTIGATION OF THE TURBULENT SWIRL FLOWS IN A CONICAL DIFFUSER

ABSTRACT
Results of the theoretical and experimental investigations of the turbulent mean swirl flows characteristics change along straight conical diffuser of incompressible fluid (air) are presented in this paper. The main swirl flow characteristics review is given. In addition: the specific swirl flow energy, the energy loss, the mean circulation, the swirl flow parameter, the ratio between the swirl and axial flow loss coefficients change along the diffuser are presented. Among other values: the Boussinesq number, outlet Coriolis coefficient and swirl flow loss coefficient dependences on inlet swirl flow parameter are also given. The swirl flow specific energy and outlet Coriolis coefficient calculation procedure are presented in this paper, as well as experimental test bed and measuring procedures. The swirl flow fields were induced by the axial fan impeller. Various swirl parameters were achieved by the impeller openings and rotational speeds.
KEYWORDS
swirl flow, swirl parameters, specific energy, loss coefficient, measurements
PAPER SUBMITTED: 2010-06-30
PAPER REVISED: 2010-07-06
PAPER ACCEPTED: 2010-07-07
DOI REFERENCE: https://doi.org/10.2298/TSCI100630026B
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2010, VOLUME 14, ISSUE Supplement 1, PAGES [S141 - S154]
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Investigation of the turbulent swirl flows in a conical diffuser

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