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Urban Wind Energy: A Wind Engineering and Wind Energy Cross-Roads Read chapter Read first chapter

2019 | OriginalPaper | Chapter

A Model Extension for Vortex-Induced Vibrations

Authors : F. Lupi, H.-J. Niemann, R. Höffer

Published in: Proceedings of the XV Conference of the Italian Association for Wind Engineering

Publisher: Springer International Publishing

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Abstract

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.

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previous chapter Uncertainty Quantification for RANS Predictions of Wind Loads on Buildings
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Metadata
Title
A Model Extension for Vortex-Induced Vibrations
Authors
F. Lupi
H.-J. Niemann
R. Höffer
Copyright Year
2019
Book
Proceedings of the XV Conference of the Italian Association for Wind Engineering

Print ISBN: 978-3-030-12814-2

Electronic ISBN: 978-3-030-12815-9

Copyright Year: 2019

DOI
https://doi.org/10.1007/978-3-030-12815-9_33

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