Flow characteristics of tandem circular cylinders: Effects of diameter ratio and longitudinal spacing

Jiunn Chi Wu; Yung Chun Hu

doi:10.2514/6.1993-3088

Flow characteristics of tandem circular cylinders: Effects of diameter ratio and longitudinal spacing

Jiunn Chi Wu, Yung Chun Hu

Department of Mechanical Engineering

Research output: Contribution to conference › Paper › peer-review

2 Scopus citations

Abstract

The characteristics of low Reynolds number flow of two circular cylinders in tandem arrangement has been studied by solving the Navier-Stokes equations in terms of stream-function and vorticity. The flow field is treated as a multiply-connected region and a vorticity constraint condition is derived to calculate the wall stream function for each cylinder. Flow solutions are obtained to show several flow features of the cross flow over the tandem cylinders (i.e., wake interference, fluctuations of lift and drag forces and vortex shedding), with two diameter ratio (0.33 and 1) and for longitudinal spacing L/D =1.5 ~ 4.0. Computed drag coefficients and Strouhal number are compared with experimental data and numerical results. Agreement as well as discrepancy of the comparisons is discussed.

Original language	English
DOIs	https://doi.org/10.2514/6.1993-3088
State	Published - 1993
Event	AIAA 23rd Fluid Dynamics, Plasmadynamics, and Lasers Conference, 1993 - Orlando, United States Duration: 6 Jul 1993 → 9 Jul 1993

Conference

Conference	AIAA 23rd Fluid Dynamics, Plasmadynamics, and Lasers Conference, 1993
Country/Territory	United States
City	Orlando
Period	6/07/93 → 9/07/93

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10.2514/6.1993-3088

Pire:Building Extreme Weather Resiliency through Improved Weather and Climate Prediction and Public Response Strategies(5/5)
Lin, P.-L. (PI)
1/09/19 → 31/08/23
Project: Research

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abstract = "The characteristics of low Reynolds number flow of two circular cylinders in tandem arrangement has been studied by solving the Navier-Stokes equations in terms of stream-function and vorticity. The flow field is treated as a multiply-connected region and a vorticity constraint condition is derived to calculate the wall stream function for each cylinder. Flow solutions are obtained to show several flow features of the cross flow over the tandem cylinders (i.e., wake interference, fluctuations of lift and drag forces and vortex shedding), with two diameter ratio (0.33 and 1) and for longitudinal spacing L/D =1.5 ~ 4.0. Computed drag coefficients and Strouhal number are compared with experimental data and numerical results. Agreement as well as discrepancy of the comparisons is discussed.",

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T2 - AIAA 23rd Fluid Dynamics, Plasmadynamics, and Lasers Conference, 1993

AU - Wu, Jiunn Chi

AU - Hu, Yung Chun

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N2 - The characteristics of low Reynolds number flow of two circular cylinders in tandem arrangement has been studied by solving the Navier-Stokes equations in terms of stream-function and vorticity. The flow field is treated as a multiply-connected region and a vorticity constraint condition is derived to calculate the wall stream function for each cylinder. Flow solutions are obtained to show several flow features of the cross flow over the tandem cylinders (i.e., wake interference, fluctuations of lift and drag forces and vortex shedding), with two diameter ratio (0.33 and 1) and for longitudinal spacing L/D =1.5 ~ 4.0. Computed drag coefficients and Strouhal number are compared with experimental data and numerical results. Agreement as well as discrepancy of the comparisons is discussed.

AB - The characteristics of low Reynolds number flow of two circular cylinders in tandem arrangement has been studied by solving the Navier-Stokes equations in terms of stream-function and vorticity. The flow field is treated as a multiply-connected region and a vorticity constraint condition is derived to calculate the wall stream function for each cylinder. Flow solutions are obtained to show several flow features of the cross flow over the tandem cylinders (i.e., wake interference, fluctuations of lift and drag forces and vortex shedding), with two diameter ratio (0.33 and 1) and for longitudinal spacing L/D =1.5 ~ 4.0. Computed drag coefficients and Strouhal number are compared with experimental data and numerical results. Agreement as well as discrepancy of the comparisons is discussed.

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AN - SCOPUS:85006355668

Y2 - 6 July 1993 through 9 July 1993

ER -

Flow characteristics of tandem circular cylinders: Effects of diameter ratio and longitudinal spacing

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Pire:Building Extreme Weather Resiliency through Improved Weather and Climate Prediction and Public Response Strategies(5/5)

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