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Effects of the Application of Inlet Disturbance Bodies to Drag Coefficients of Tandem Arranged Square Cylinders
Habiba S.
Aip Conference Proceedings
Abstract
Fluid flow through square cylinders arranged in tandem with triangular cylinders as inlet disturbance bodies (IDB) was analyzed computationally and experimentally at five levels of Reynolds number. The variations in the ratio of the distance between square and triangular cylinders were assigned as M/D=0.00, M/D=0.05, M/D=0.15, M/D=0.25, M/D=0.35, M/D=0.45, and M/D=0.55. The results are in the form of velocity pathlines validated by flow visualization, computational pressure contours, and drag coefficient through experimental testing. The results show that the smallest boundary layer thickness was obtained in the model with a distance ratio of M/D=0.35, by both computational and experimental approaches. The minimal pressure contour characteristics as well as the lowest drag coefficient were also obtained at the ratio of the distance M/D=0.35 at an upstream velocity of 9 m/s of 0.6588.