Measurements of the flow fields around two square cylinders in a tandem arrangement

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...

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Bibliographic Details
Published in:Journal of mechanical science and technology 2008-02, Vol.22 (2), p.397-407
Main Authors: Kim, Moon Kyoung, Kim, Dong Keon, Yoon, Soon Hyun, Lee, Dae Hee
Format: Article
Language:English
Subjects:
Control
Cylinders
Dynamical Systems
Engineering
Exact sciences and technology
Fluid dynamics
Fluid flow
Fundamental areas of phenomenology (including applications)
Industrial and Production Engineering
Kinetic energy
Mechanical Engineering
Physics
Reynolds number
Shear stress
Turbulence
Turbulent flow
Turbulent flows, convection, and heat transfer
Vibration
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Summary: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.
ISSN:1738-494X
1976-3824
DOI:10.1007/s12206-007-1041-6