Strouhal number and vortices in far wake of cylinder

The wake past a smooth cylinder perpendicular to the flow is studied 15 D (cylinder diameters) downstream by using particle image velocimetry (PIV). Spatial shedding period is used to estimate the spatial Strouhal number (Sh) and to compare with time-resolved hot-wire anemometer (HWA). The vortices...

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Bibliographic Details
Published in:Journal of physics. Conference series 2022-11, Vol.2367 (1), p.12017
Main Authors: Duda, D, Yanovych, V, Horáček, V, Uruba, V
Format: Article
Language:English
Subjects:
Cylinders
Fluid flow
Particle image velocimetry
Physics
Reynolds number
Strouhal number
Vortices
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Summary:The wake past a smooth cylinder perpendicular to the flow is studied 15 D (cylinder diameters) downstream by using particle image velocimetry (PIV). Spatial shedding period is used to estimate the spatial Strouhal number (Sh) and to compare with time-resolved hot-wire anemometer (HWA). The vortices are detected within the spatial fluctuation field. The statistical vortex properties do not change within the explored range of Reynolds numbers (from 5 000 to 60 000), similarly the spectra and Sh.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2367/1/012017