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http://dx.doi.org/10.6112/kscfe.2015.20.3.47

FLOW PAST A RECTANGULAR CYLINDER  

Park, Doohyun (Dept. of Mechanical Engineering, Inha University)
Yang, Kyung-Soo (Dept. of Mechanical Engineering, Inha University)
Ahn, Hyungsu (Dept. of Mechanical Engineering, Inha University)
Publication Information
Journal of computational fluids engineering / v.20, no.3, 2015 , pp. 47-53 More about this Journal
Abstract
This study performed numerical simulation to elucidate the characteristics of flow past a rectangular cylinder with various values of the aspect ratio(AR) of the cylinder. We calculated the flow field, force coefficients and Strouhal number of vortex shedding depending on the Reynolds number(Re) and the aspect ratio. The $AR{\approx}1$ is preferred for drag reduction, and 0.375 is recommended if suppression of the lift-coefficient fluctuation and the shedding frequency is desirable. Furthermore the criticality of the Hopf bifurcation is also reported for each AR.
Keywords
Immersed boundary method; Normal flat plate; Square cylinder; Flow instability;
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