CHARACTERIZATION OF FLOW PAST AN INCLINED SQUARE CYLINDER

초록

A parametric study has been carried out to elucidate the characteristics of flow patterns past a square cylinder inclined with respect to the main flow for Re≤150. Reynolds number and angle of incidence are the key parameters which determine the flow characteristics. Location of separation point is greatly affected by angle of incidence, thus determining the flow field around the square cylinder. Attempt is made to classify the related flow patterns from a topological point of view, resulting in five distinct patterns in total. A comprehensive analysis of the effects of Reynolds number and angle of incidence on flow patterns near the square cylinder is presented. Collecting all the results obtained, a flow-pattern diagram is proposed for the ranges of the two parameters considered in the current investigation. The proposed diagram sheds light on better physical understanding of the flow past a square cylinder, which should be useful in many engineering applications.