Abstract
The interaction of long elastic beams with fluid in the resonance vibration regimes is investigated experimentally and numerically. Damping bending vibration of cantilevered test-samples in air is studied experimentally. The angular velocities of the free end of cantilever are recorded using a microelectromechanical gyroscope and the flows in the neighborhood of the beam induced by vibration are observed using smoke visualization. The quasi-two-dimensional mathematical model of solid–fluid interaction is constructed. The model makes it possible to estimate the force aerodynamic action to the beam based on the measured logarithmic vibration damping ratio and the relative change in the frequency. The three-dimensional motion of fluid in the neighborhood of cantilever is directly simulated numerically. The flow structure and the aerodynamic forces induced by vibration of the beam under various vibration parameters are analyzed on the base of the results of the numerical and experimental–theoretical investigations. The applicability of quasi-two-dimensional interaction model is investigated
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Funding
The work was carried out with support from the Russian Foundation for Basic Research (project no. 19-38-60023) and the Program of Strategic Academic Leadership of Kazan Federal University (“PRIORITET-2030”).
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Translated by E.A. Pushkar
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Nuriev, A.N., Kamalutdinov, A.M. Identification of Characteristics of the Force Aerodynamic Action on Oscillating Cantilevered Beams. Fluid Dyn 57, 608–624 (2022). https://doi.org/10.1134/S001546282205010X
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DOI: https://doi.org/10.1134/S001546282205010X