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http://dx.doi.org/10.6112/kscfe.2014.19.1.057

EFFECTS OF ROUNDING CORNERS ON THE FLOW PAST A SQUARE CYLINDER  

Park, Doohyun (Dept. of Mechanical Engineering, Inha University)
Yang, Kyung-Soo (Dept. of Mechanical Engineering, Inha University)
Lee, Kyongjun (Dept. of Mechanical Engineering, Inha University)
Kang, Changwoo (Dept. of Mechanical Engineering, Inha University)
Publication Information
Journal of computational fluids engineering / v.19, no.1, 2014 , pp. 57-63 More about this Journal
Abstract
This study performed numerical analysis for the characteristics of flow-induced forces and the flow instability depending on the cross-sectional shape of the cylinder in laminar flow. To implement the cylinder cross-section, we adopted an Immersed Boundary Method with marker particles. We analyzed flow characteristics based on the radius of corner curvature. Main parameters are corner radius and Reynolds number (Re). With Re = 40, 50, 150 we calculated the flow field, drag coefficient, RMS of lift coefficient, pressure coefficient and Strouhal number in conjunction with the corner radius variation. Also, we calculated critical Reynolds number ($Re_c$) depending on the corner radius variation.
Keywords
IBM; Square Cylinder; Rounding; Flow Instability;
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