A Model Extension for Vortex-Induced Vibrations

  • F. LupiEmail author
  • H.-J. Niemann
  • R. Höffer
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 27)


The paper presents free-vibration wind tunnel tests performed at WIST Boundary Layer Wind Tunnel at Ruhr-Universität Bochum (Germany) on a 3D aeroelastic cylindrical model with circular cross-section. The aim of the tests is to validate a model extension to the original spectral method developed by Vickery & Basu, able to calculate the maximum oscillation of a structure subjected to vortex-induced vibration in the lock-in region. The peculiarity of the extension is the implementation of an experimental curve for the negative aerodynamic damping. It was previously developed by the authors through forced vibration wind tunnel tests. The model extension is based on a linear differential equation. In fact, linear – in case iterative – approaches are usually preferred for the design of structures. However, limitations due to linearization of an intrinsically non-linear phenomenon are unavoidable. Strengths and weaknesses of the linear approach are discussed in the paper.


Circular cylinder Free-vibration wind tunnel tests Vortex-induced vibrations Vortex shedding Vortex resonance Aerodynamic damping 



The first author would like to acknowledge the Alexander von Humboldt Foundation (Germany) for the support to this research and the European Commission’s Framework Program “Horizon 2020”, through the Marie Skłodowska-Curie Innovative Training Networks (ITN) “AEOLUS4FUTURE - Efficient harvesting of the wind energy” (H2020-MSCA-ITN-2014: Grant agreement no. 643167) for the possibility of cooperation.


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Faculty of Civil and Environmental Engineering, Department of Wind Engineering and Flow MechanicsRuhr-Universität BochumBochumGermany
  2. 2.Niemann & Partner IngenieurgesellschaftBochumGermany

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