Vortex induced vibrations of rectangular cylinders arranged on a grid

Résumé du projet

A grid arrangement of hundred rectangular cylinders fixed to the facade of a house generates strong and disturbing mono-harmonic noise. The cross-flow vibration of the rectangular cylinders is identified as the origin of the noise. The present article proposes a complete investigation of the Vortex Induced Vibration (VIV) combined with a grid effect. It is based on in situ measurements, numerical (finite elements and Computational Fluid Dynamics (CFD)) and extensive wind tunnel modelling. A comparison between unsteady pressure tap measurements and CFD results allow to understand the vortex shedding process and synchronization type depending on the wind incidence and spacing of the cylinders. On the basis of this multi-approaches parametric investigation, a deep understanding of the VIV-grid phenomenon enables to propose two mitigation techniques. These techniques are tested and their effectiveness is reported in terms of vibration amplitude and acoustic intensity.

Publications

Vortex induced vibration of two tandem cylinders in subcritical regime, 2020, May

A de-mixing approach for the management of large negative peaks in wind tunnel data, 2020

Mixture model approach for peak factor estimation and its application in cladding design, 2019, September 02

L’expérience a encore de beaux jours devant elle, 2019, May 06

Couplage vent - structure : Estimation corrigée de facteur de pointe dans le design de cladding & Modélisation aéroélastique de structures en interaction, 2019, February, 18

On the Use of the Cubic Translation to Model Bimodal Wind Pressures, 2019

On the use of the cubic translation to model bimodal wind pressures, 2019

Mixture model in high-order statistics for peak factor estimation on low-rise building, 2018, December 10

Vortex induced vibrations of rectangular cylinders arranged on a grid, 2018, December 10

VIV response of a suspended sphere nearby the critical Reynolds number, 2018, September 10

Vortex induced vibrations of rectangular cylinders arranged on a grid, 2018

Unsteady pressure measurement around aerodynamic bodies: Development of a calibration apparatus and wind tunnel testing, 2017, mémoire de licence/master