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Download fileInfluence of the Reynolds number on the instant flow evolution of a turbulent rectangular free jet of air
journal contribution
posted on 2017-08-17, 09:07 authored by Fabio Gori, Ivano Petracci, Matteo AngelinoThe paper is aimed at investigating the influence of the Reynolds number on the instant flow evolution of a rectangular free jet of air in the range of Reynolds numbers from Re = 35,300 to Re = 2,200, where the Reynolds number, Re, is defined according to the hydraulic diameter, D, of a rectangular slot of height H, equal to about D = 2H. The Particle Image Velocimetry (PIV) technique allows obtaining the instant PIV visualizations on the central symmetry section of the rectangular jet. The visual inspection of the instant frames with one and two vortices, except for Re = 35,300 where only one vortex images are detected, shows that after the jet exit is present the Flow with Constant Instant Height, with a length LCIH which increases with the decrease of the Reynolds number, from a ratio LCIH/H equal to LCIH/H = 0.9 at Re = 35,300 to LCIH/H = 4.0 at Re = 2,200. [Continues.]
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Aeronautical and Automotive Engineering
Published in
International Journal of Heat and Fluid FlowVolume
50Pages
386 - 401Citation
GORI, F., PETRACCI, I. and ANGELINO, M., 2014. Influence of the Reynolds number on the instant flow evolution of a turbulent rectangular free jet of air. International Journal of Heat and Fluid Flow, 50, pp.386-401.Publisher
© ElsevierVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2014ISSN
0142-727XPublisher version
Language
- en