The effect of various-height plates on flow characteristics in side by side circular cylinders

The main purpose of the present study is to investigate the flow behaviour around a vertical side-by-side two cylinders placed in shallow water was controlled by splitter plate inserted at various locations dowstream of the cylinder. Experiments were undertaken in a water channel in Fluid Mechanics Laboratory, Mechanical Engineering Department of Cukurova University. The splitter plate has a length which is ranged from 0 mm to 250 mm with 25 mm increments. The splitter plate has a heights which is 0 mm, 5 mm, 10 mm, 12.5 mm, 17.5 mm, 22.5 mm. And the cylinder has a fixed diameter which is equal to D=50 mm. The effect of plate thickness,T ,was examined using plate thicknesses, T/D=0,05. The gap between the base of the cylinder and the leading edge of the splitter plate was a fixed lenght which is equal to L=20 mm. Particle Image Velocimetry (PIV) was used to measure instantanoues velocity vector field in the wake region at Reynolds number based on cylinder diameter Re=5000. The mean velocity vector field, corresponding vorticity field and streamline topology and turbulence statistics were obtained from 350 instantanous images. Increasing splitter plate height controls the vortex shedding better. Moreover, the length increase of the splitter plate affects the control of vortex formation.