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Article Dans Une Revue Journal of Fluids and Structures Année : 2020

A hybrid numerical approach to predict the vibrational responses of panels excited by a turbulent boundary layer

Olivier Robin
Alex Skvortsov
  • Fonction : Auteur
Steffen Marburg
  • Fonction : Auteur
Nicole Kessissoglou
  • Fonction : Auteur

Résumé

In this work, a hybrid numerical approach to predict the vibrational responses of planar structures excited by a turbulent boundary layer is presented. The approach combines an uncorrelated wall plane wave technique with the finite element method. The wall pressure field induced by a turbulent boundary layer is obtained as a set of uncorrelated wall pressure plane waves. The amplitude of these plane waves are determined from the cross spectrum density function of the wall pressure field given either by empirical models from literature or from experimental data. The response of the planar structure subject to a turbulent boundary layer excitation is then obtained from an ensemble average of the different realizations. The numerical technique is computationally efficient as it rapidly converges using a small number of realizations. To demonstrate the method, the vibrational responses of two panels with simply supported or clamped boundary conditions and excited by turbulent flow are considered. In the case study comprising a plate with
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Dates et versions

hal-02414516 , version 1 (16-12-2019)

Identifiants

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Mahmoud Karimi, Paul Croaker, Laurent Maxit, Olivier Robin, Alex Skvortsov, et al.. A hybrid numerical approach to predict the vibrational responses of panels excited by a turbulent boundary layer. Journal of Fluids and Structures, 2020, 92, pp.102814. ⟨10.1016/j.jfluidstructs.2019.102814⟩. ⟨hal-02414516⟩
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