Measurement of critical velocities for fluidelastic instability using vibration control

Abstract : Fluidelastic effects may be responsible for instabilities of heat exchanger tubes when the fluid flow reaches the critical velocity. The fluidelastic phenomenon is usually studied on experimental mock-ups, which may display only one critical velocity. In this paper, a method based on active vibration control is proposed in order to derive several critical velocities for fluidelastic instability corresponding to several different values of damping, which is artificially varied on the same mock-up. Experimental tests are performed on a flexible tube equipped with piezoelectric actuators in a rigid array under air-water cross-flow. It is shown that the reduced critical velocities thus obtained fit well in a classical stability map.
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Article dans une revue
Journal of Vibration and Acoustics, American Society of Mechanical Engineers, 2000, 122 (4), pp.341-345
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Contributeur : Denis Roura <>
Soumis le : jeudi 17 juillet 2014 - 16:29:10
Dernière modification le : jeudi 10 mai 2018 - 02:03:38

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  • HAL Id : hal-01025363, version 1

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S. Caillaud, Emmanuel De Langre, P. Piteau. Measurement of critical velocities for fluidelastic instability using vibration control. Journal of Vibration and Acoustics, American Society of Mechanical Engineers, 2000, 122 (4), pp.341-345. 〈hal-01025363〉

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