Computation of Flow around Single Rectangular Cylinders with a Splitter Plate

J. Ocean Eng. Technol. 1993;7(2):30-36.

분리판이 부착된 사각형실린더 주위의 유동계산

박외철

부산공업대학교 산업안전공학과

Keywords: Vortex Tracing Method, Unsteady Separated Flow, Vortex Street, Drag Coefficient, Shear Layers

핵심용어: 와류추적법, 비정상 박리유동, 와류열, 항력계수, 전단층

Abstract

Incompressible, unsteady flow around various single rectangular cylinders of side ratios ranging from 0.005 to 2.0 immersed in uniform flow is computed by the vortex tracing me thod.
Results
with and without a splitter plate pttached to the rear center of the cylinder are compared. The objective of this study is to investigate predictability of the effects of the splitter plate on drag by the method. Without the splitter plate, computed drag coefficients for cylinders of large side ratios are in good agreement with measured values, but are over predicted for those of small side ratios. With the splitter plate, drag coefficient is reduced significantly due to suppression of vortex growing near the base and interaction between the separated shear layers.