Control of the Flow Around Square Cylinders at Incidence by Using a Rod

Aerodynamic characteristics of a square cylinder at incidence were investigated experimentally in the wake of a small rod at a Reynolds number of 3.4 x 10 4 . The dimensionless gap L/D was varied from 1.71 to 8.00. Depending on the spacing L/D, two flow patterns with and without vortex shedding from the rod were observed. Pressure measurements on the rod and square cylinder and hot-film measurements in the wake of the cylinder were carried out The combined influences of the rod and angle of incidence on the pressure distributions and vortex-shedding phenomenon were investigated