Flow Around A Circular Cylinder Vertically Mounted in a Turbulent Boundary Layer

抄録

The present study describes an experimental investigation on the flow around a circular cylinder vertically mounted on a plane wall along which a turbulent boundary layer is fully developed. For the purpose of decreasing the number of geometrical parameters, the height and diameter of the cylinder are taken to be equal in the present case. Measurements were made of the pressure distributions and the drag forces acting on the cylinder. The pressure forces of the circular cylinders were experimentally correlated with the mean dynamic pressure of the turbulent boundary layer, which was defined as q=∫_o¹(u/U₀)²d(y/h). Drag force coefficients were found to be expressed as a linear function of the mean dynamic pressure included in the turbulent boundary layer described above.