Lift Coefficients and Pressure Distribution Acting on Two Tandem Cylinders of Different Diameters

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Flow characteristics of two different diameters cylinders in a tandem arrangement were investigated numerically in a uniform flow. The diameter of the downstream main cylinder was kept constant, and the diameter ratio between the upstream control cylinder and the downstream one was varied from 0.1 to 1.0. The studied Reynolds number based on the diameter of the downstream main cylinder were 100 and 150. The gap between the control cylinder and the main cylinder ranged from 0.1 to 4.0 times the diameter of the main cylinder. It is concluded that the gap ratio and the diameter ratio between the two cylinders have important effects on the lift coefficients and pressure distribution.

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417-421

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January 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] Bearman, P. W., and Wadcock, A. J. 1973. The interaction between a pair of circular cylinder normal to a stream. Journal of Fluid Mechanics, 61, 499-511.

DOI: 10.1017/s0022112073000832

Google Scholar

[2] Zdravkovich, M. M. 1977. Review of flow interference between two circular cylinders in various arrangements. ASME. Journal of Fluids Engineering, 99, 618-633.

DOI: 10.1115/1.3448871

Google Scholar

[3] Zdravkovich, M. M. 1987. The effect of interference between circular cylinders in cross flow. Journal of Fluids and Structure, 1, 239-261.

Google Scholar

[4] Igarashi, T. 1981. Characteristics of the flow around two circular cylinders arranged in tandem (1st report). Bulletin of the Japan Society of Mechanical Engineering, 24, 323–331.

DOI: 10.1299/jsme1958.24.323

Google Scholar

[5] Williamson, C. H. K. 1985. Evolution of a single wake behind a pair of bluff bodies. Journal of Fluid Mechanics, 159, 1–18.

DOI: 10.1017/s002211208500307x

Google Scholar

[6] Sumner, D., Price, S. J., and Paidoussis, M. P. 2000. Flow-pattern identification for two staggered circulation cylinders in cross-flow. Journal of Fluid Mechanics, 411, 263-303.

DOI: 10.1017/s0022112099008137

Google Scholar

[7] Alam, M., and Zhou. Y. 2008. Strouhal numbers, forces and flow structures around two tandem cylinders of different diameters. Journal of Fluids and Structure, 24, 505-526.

DOI: 10.1016/j.jfluidstructs.2007.10.001

Google Scholar

[8] Sharman, B., Lien, F. S., Davidson, L., and Norberg. C. 2005. Numerical predictions of low Reynolds number flows over two tandem circular cylinders. International Journal for Numerical Methods in Fluids, 47, 423-447.

DOI: 10.1002/fld.812

Google Scholar

[9] Zdravkovich, M. M. 1987. The effect of interference between circular cylinders in cross flow. Journal of Fluids and Structure, 1, 239-261.

Google Scholar

[10] Zhao, M., Cheng. L., Teng, B., and Liang, D. F. 2005. Numerical simulation of viscous flow past two circular cylinders of different diameters. Applied Ocean Research, 27, 39-55.

DOI: 10.1016/j.apor.2004.10.002

Google Scholar

[11] Zhao, M., Cheng, L., Teng, B., and Dong, G. 2007. Hydrodynamic forces on dual cylinders of different diameters in steady currents. Journal of Fluids and Structure, 23, 59-83.

DOI: 10.1016/j.jfluidstructs.2006.07.003

Google Scholar

[12] Prasad, A. and Williamsion, C. H. K. 1997. A method for the reduction of bluff body drag. Journal of Wind Engineering and Industrial Aerodynamics, 69, 155-167.

DOI: 10.1016/s0167-6105(97)00151-7

Google Scholar