Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30982
Experimental Study of Frequency Behavior for a Circular Cylinder behind an Airfoil

Authors: S. Bajalan, A. Shadaram, N. Hedayat, A. Shams Taleghani


The interaction between wakes of bluff body and airfoil have profound influences on system performance in many industrial applications, e.g., turbo-machinery and cooling fan. The present work investigates the effect of configuration include; airfoil-s angle of attack, transverse and inline spacing of the models, on frequency behavior of the cylinder-s near-wake. The experiments carried on under subcritical flow regime, using the hot-wire anemometry (HWA). The relationship between the Strouhal numbers and arrangements provide an insight into the global physical processes of wake interaction and vortex shedding.

Keywords: Airfoil, cylinder, Strouhal, Wake interaction

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1450


[1] M. M. Zdravkovich and D. L. Pridden, "Interference between two circular cylinders; series of unexpected discontinuities", Journal of Industrial Aerodynamics 2, 255-270, 1977.
[2] M. M. Zdravkovich, "The effects of interference between circular cylinders in cross flow", Journal of Fluids and Structures 1, 239-261 (1987).
[3] M. M. Zdravkovich, Flow around Circular Cylinders, Fundamentals, Oxford Science Publications, Vol. I, 1997.
[4] M. M. Zdravkovich, Flow around Circular Cylinders, Applications, Oxford Science Publications, Vol. I I, 2003.
[5] O. O. Akosile, and D. Summer, "Staggered Circular Cylinders Immersed in a Uniform Planar Shear Flow", Journal of Fluids and Structures, 18, 613-633, 2003.
[6] Y. L. Lau, R. M. C. So and R. C. K. Leung, "Flow- Induced Vibration of Elastic Slender Structures in a Cylinder Wake", Journal of Fluids and Structures, Vol: 19, 2004.
[7] H. J. Zhang, L. Huang, and Y. Zhou, "Aerodynamic Loading on a Cylinder behind an Airfoil", Experiments in Fluids, 38, 588-593, 2005.
[8] C. Y. Zhou, C. W. Sun, Y. Zhou, and L. Huang, "A, Numerical Study of a Circular Cylinder in the Wake of an Airfoil", 15th Australasian Fluid Mechanics Conference, University of Sydney, Sydney, Australia, 2004.
[9] I. Y─▒ld─▒r─▒m, , O. Cetiner and M. F. Unal, "Wake Interactions for A Circular Cylinder Behind an Airfoil", 3rd international conference on vortex flows and vortex models Yokohama, Japan, November 21-23 ,2005.
[10] M. Ikehata, T. Inoue, M. Ozawa, and S. Matsumoto, "Experimental Investigation on Flow Fields of Viscous Fluid around Two-Dimensional Wings and Comparison with Computational Results", Journal of Marine Science and Technology 2:62-76, 1997.
[11] C. Tropea, A. L. Yarin and J. F. Foss (Eds.), Springer Handbook of Experimental Fluid Mechanics, Springer-Verlag Berlin Heidelberg, 2007.