THERMAL SCIENCE

International Scientific Journal

Dejan B. Ilić

,

Miroslav H. Benišek

,

Đorđe S. Čantrak

EXPERIMENTAL INVESTIGATIONS OF THE TURBULENT SWIRL FLOW IN STRAIGHT CONICAL DIFFUSERS WITH VARIOUS ANGLES

ABSTRACT
Results of experimental investigations of the turbulent swirl flow in three straight conical diffusers with various diffuser total angles are presented in this paper. All three diffusers have the inlet diameter 0.4 m and total divergence angles 8.6°, 10.5°, and 12.6°. The incompressible swirl flow field is generated by the axial fan impeller, and for each diffuser several regimes were achieved by changing rotation number. Original classical probes were used for measurements. The distributions of the average main swirl flow characteristics along the diffuser are shown. Distributions of the inlet Boussinesq number, outlet Coriolis coefficient, ratio of the swirl and completely axial flow loss coefficients at conical diffuser on the inlet swirl flow parameter are also presented.
KEYWORDS
diffuser, turbulent swirl flow, loss coefficient
PAPER SUBMITTED: 1970-01-01
PAPER REVISED: 2016-03-23
PAPER ACCEPTED: 2016-04-29
PUBLISHED ONLINE: 2016-08-07
DOI REFERENCE: https://doi.org/10.2298/TSCI160205193I
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Supplement 3, PAGES [S725 - S736]
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Experimental investigations of the turbulent swirl flow in straight conical diffusers with various angles

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence