This study is to investigate flow around a circular cylinder with free endat high Reynolds number (Re=43000) by using the technique of Shearstresstransport based detached-eddy simulation (SST-DES). The SSTDESkeeps the characteristics of Reynolds-Averaged Navies-Stokes(RANS) in the boundary layer and increases the accuracy of resolutionin the regions far away from the wall with Large-Eddy Simulation (LES).Different aspect ratios (namely L/D) of circular cylinder is firstlysimulated in CFD solver naoe-FOAM-SJTU. To further illustrate thevortex shedding characteristics of stationary circular with differentaspect ratio, the drag force coefficient and surface pressure coefficientare extensively studied and analyzed. Compared with model tests whichare performed by Goncalves et al. (2015), the results of naoe-FOAMSJTUsolver in numerical simulation show that the model in this paper isreliable and efficient.
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