LAUSR

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.