Numerical study of passive control flow on cylinder by splitter plate in narrow channel

Two dimensional numerical study of cylinder by using splitter plate in narrow channel is investigated for Reynolds number 5.21 × 104 ≤ Re ≤ 1.56 × 105. The Splitter has fixed length which is equal to 2D of diameter cylinder, with D = 25 mm. The splitter plate are using three different plate thicknesses, T/D = 0.016, 0.04, and 0.08, respectively. The channel height, H, is 125 mm. The effect of splitter plate on cylinder at certain T/D shows the information of mean pressure coefficient, pressure drag coefficient, fequency of vortex shedding, and instantanious velocity pathline. From numerical result, T/D 0.08 can reduce coefficient drag pressure force more optimal than the others. Meanwhile, higher Reynolds number produce small grade for strouhal number which the most lowest of Strouhal number is T/D 0.08.