An analysis of the dependence on cross section geometry of galloping stability of two-dimensional bodies having either biconvex or rhomboidal cross sections. (English) Zbl 1156.76302

Summary: Galloping is a well-known type of aeroelastic instability, but still difficult to predict as the relevant experimental data must first be obtained. Available information on non-rectangular cross-sections is scarce and non-systematic. The purpose of the present paper is to add new information gathered through static wind tunnel experiments. The effects of cross-sectional shape on the transverse galloping stability (according to the Glauert-Den Hartog criterion for galloping instability) of biconvex and rhomboidal cross-section bodies have been systematically analyzed. Measuring the aerodynamic coefficients and the pressure distributions along the body surfaces permits a better understanding of the galloping phenomenon and how the aerodynamic characteristics of the bodies evolve when changing parametrically the cross-section geometry from the known-case of the flat plate to the also known square or circular prisms. As a result of these investigations the potential unstable zones in the angle of attack - cross-section aspect ratio plane \((\alpha ,t/c)\) are identified.


76-05 Experimental work for problems pertaining to fluid mechanics
76E99 Hydrodynamic stability
74F10 Fluid-solid interactions (including aero- and hydro-elasticity, porosity, etc.)
Full Text: DOI


[1] Blevins, R. D., Flow Induced Vibration (2001), Krieger Publishing Company: Krieger Publishing Company Malabar
[2] Ruecheweyh, H.; Hortmanns, M.; Schnakenberg, C., Vortex-excited vibrations and galloping of slender elements, J. Wind Eng. Ind. Aerodyn., 65, 347-352 (1996)
[3] Kawai, H., Effect of corner modifications on aeroelastic instabilities of tall buildings, J. Wind Eng. Ind. Aerodyn., 74-76, 719-729 (1998)
[4] Luo, S. C.; Chew, Y. T.; Lee, T. S.; Yazdani, M. G., Stability to translational galloping vibration of cylinders at different mean angles of attack, J. Sound Vib., 215, 1183-1194 (1998)
[5] Chabart, O.; Lilien, J. L., Galloping of electrical lines in wind tunnel facilities, J. Wind Eng. Ind. Aerodyn., 74-76, 967-976 (1998)
[6] McComber, P.; Paradis, A., A cable galloping model for thin ice accretions, Atmos. Res., 46, 13-25 (1998)
[7] Alonso, G.; Meseguer, J., A parametric study of the galloping instability of triangular cross-section bodies, J. Wind Eng. Ind. Aerodyn., 94, 241-253 (2006)
[8] Alonso, G.; Meseguer, J.; Pérez-Grande, I., Galloping oscillations of two-dimensional triangular cross-sectional bodies, Exp. Fluids, 38, 789-795 (2005)
[9] Alonso, G.; Meseguer, J.; Pérez-Grande, I., Galloping stability of triangular cross-sectional bodies: A systematic approach, J. Wind Eng. Ind. Aerodyn., 95, 928-940 (2007)
[11] Blevins, R. D., Applied Fluid Dynamics Handbook (1992), Krieger Publishing Company: Krieger Publishing Company Malabar
[12] Kazakewich, M. I.; Vasilenko, A. G., Closed analytical solution for galloping aeroelastic self-oscillations, J. Wind Eng. Ind. Aerodyn., 65, 353-360 (1996)
[13] Barlow, J. B.; Rae, W. H.; Pope, A., Low-Speed Wind Tunnel Testing (1999), John Wiley & Sons, Inc.: John Wiley & Sons, Inc. New York
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