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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.
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 Benišek, M.H., et al., Investigation of the Turbulent Swirl Flows in a Conical Diffuser, Thermal Science, Vol. 14 (2010), Supplement 1, pp. S141 - S154
 Čantrak Đ., et al., Investigation of the Turbulent Swirl Flow in Pipe Generated by Axial Fans using PIV and LDA Methods, Theoretical and Applied Mechanics, Vol. 42 (2015), Issue 3, pp. 211-222
 Benišek, M., Investigation of the Swirl Flow in Long Lined Circular Pipes (in Serbian), Ph.D. thesis, Univ. Belgrade, Faculty of Mech. Eng., Belgrade, Serbia, 1979
 Benišek, M.H., et al., Aplication of New Classical Probes in Swirl Fluid Flow Measurements, Experimental Techniques, Vol. 34 (2010), Issue 3, pp. 74-81
 Benišek, M., et al., Universal Calibration Characteristics Conrad Probe for Measures 3D Velocity, Pressure and Total Pressure of Stationary Inviscid Fluid Flow, Proceedings of Metrological, Yug. Cong., Novi Sad, Serbia, 2000
 Ilić, D.B., Swirl Flow in Conical Diffusers, Ph.D. thesis, Univ. Belgrade, Faculty of Mech. Eng., Belgrade, Serbia, 2013
 Čantrak, S., Hydrodynamics – Selected Chapters (in Serbian), Faculty of Mechanical Engineering, Belgrade, Serbia, 1998
 Strscheletzky, M., Equilibrium Forms of the Axisymmetric Flows with Constant Swirl in Straight, Cylindrical Rotation Geometries (in German), Voith Forschung und Konstruktion, Heft 5 (1959), Aufsatz 1
 Kitoh, O., Experimental Study of Turbulent Swirl Flow in a Straight Pipe, J. Fluid Mech., Vol. 225 (1991), pp. 445-479
 Mahmud, T., et al., Flow Characterizations of Swirl Coaxial Jets from Diverging Nozzels, J. Fluid Eng., Vol. 109 (1987), pp. 275-281
 Baker, W., Sayre, C.L., Decay of Swirl Flow of Incompressible Fluids in Long Pipes, Flow: Its Meas. And Control in Sci. And Ind., Proc. Symp., Pt. 1, Pittsburgh, USA, 1971, Vol l, pp. 301-312
 Povh, I.L., Aerodynamic Experiments in Mechanical Engineering (in Russian), Moscow, Leningrad, SSSR, 1974