THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

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Yuxiang Ying

,

Tongxiao Jiang

,

Deming Nie

NUMERICAL SIMULATIONS OF THE FLOW AROUND A FINITE-HEIGHT CIRCULAR CYLINDER UNDER TURBULENT

ABSTRACT
To investigate the 3-D characteristics of the flow around a finite-height circular cylinder, this study was based on the CFD technology. The flow was numerically simulated between Re = 1000 and 10000 using the large eddy simulation method to verify and analyze the results. Comparing the instantaneous contours of vorticity for different heights at the same Reynolds number, it can be seen that the free end influences vortex shedding. The instantaneous contours of vorticity for a complete period of vortex shedding were analyzed to explain the causes of lift force generation. Analysis of the effect of Reynolds numbers on the Strohal number was done. The analysis focused on the wake structure of the column at Re = 1000 and Re = 10000, and a significant difference was found between the two cases.
KEYWORDS
finite-height cylinder, large eddy simulation, vortex structure
PAPER SUBMITTED: 2022-03-12
PAPER REVISED: 2022-03-24
PAPER ACCEPTED: 2022-04-14
PUBLISHED ONLINE: 2023-04-08
DOI REFERENCE: https://doi.org/10.2298/TSCI23S1173Y
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Special issue 1, PAGES [173 - 184]
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Numerical simulations of the flow around a finite-height circular cylinder under turbulent

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