Measurements of the flow fields around two square cylinders in a tandem arrangement |
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| Authors: | Moon Kyoung Kim Dong Keon Kim Soon Hyun Yoon Dae Hee Lee |
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| Affiliation: | (1) Department of Mechanical Design Chang-Won College, 196 Doodae-Dong, Changwon, Gyeongnam, Korea;(2) Institute of Mechanical Engineering Technology, Moscow, Russia;(3) School of Mechanical Engineering Busan National University, Gumjung-Gu, Busan, 609-735, Korea;(4) Inje Engineering Institute School of Mechanical and Automotive Engineering Inje University, 607 Obang-Dong, Gimhae, Gyeongnam, 621-749, Korea |
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| Abstract: | The velocities, turbulence intensities, Reynolds shear stresses, and turbulent kinetic energies of the flow fields around
two square cylinders in a tandem arrangement were investigated using particle image velocimetry (PIV). The experiments were
made for the spacing between the two cylinders ranging from s/D = 0.5 to 10.0 and two Reynolds numbers of 5,300 and 16,000.
The results showed that the flow patterns at s/D≤2.0 were drastically different from those at s/D≥2.5 for both Reynolds numbers.
The sudden change in the flow patterns depended on the reattachment of the shear layer separated from the upstream cylinder. |
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| Keywords: | Square cylinder Tandem arrangement Flow fields Critical spacing Strouhal number Particle image velocimetry |
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