The effect of the splitter plates on flow characteristics that are vertically plates on flow between side by side cylinders in shallow watert

In this paper, flow changes were observed via particulate image velocimetry (piv) technique in shallow water flow for two side by side circular cylinders which a vertically placed splitter plate (vsp) was placed between them. the circular cylinders made of acrylic material have a diameter of 𝐷=40 mm. throughout the experiments water height was ℎ𝑤=20 mm and flow images were taken at the elevation of ℎ𝐿=10 mm. the free stream velocity was 𝑈∞=125 mm/sec and reynolds number was 𝑅𝑒𝐷=5000 based on diameters of circular cylinders. five different vsps varied from heights of 𝐻=2 mm to 10 mm with an increment 2 mm were used to control unsteady flow. the gap/diameter ratio was 𝐺𝐷=1.25⁄ for all cases. dimensionless turbulence kinetic energy values and time-averaged velocity vectors were acquired by processing experimentally obtained data on a computer. as a result, the usage of splitter plate has shown its effectiveness on flow control. after the plate height of 𝐻=6 mm, tke values were decreased significantly. the most effective plate height on the flow control was seen as 𝐻=10 mm.