Exact and numerical responses of a plate under a turbulent boundary layer excitation

Rosa, Sergio De; Franco, Francesco

doi:10.1016/j.jfluidstructs.2007.07.007

Cited by 74 publications

(30 citation statements)

References 27 publications

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“…The proposed loading model can also be applied on more complex structures. In the same time, De Rosa and Franco [28] proposed a scaling procedure in order to reduce the computation cost which can be induced by a high modal density. It consists to reduce the dimensions not involved in the energy transmission whereas 120 the damping is increased in order to keep the same dissipated energy.…”

Section: Models) Discussion On Different Models Andmentioning

confidence: 99%

“…Eq. (27)(28)). For a complex panel, the forced response or the mode shapes can be calculated by FEM and can be known at discrete points (i.e.…”

mentioning

confidence: 99%

“…the nodes of the mesh). In the literature ( [24][25], [28]), it has already been shown that the size mesh should be defined carefully for describing correctly the spatial variations of the WPF and for avoiding aliasing phenomenon [25]. In order to study the influence of this type of approximation in the 485 framework of the proposed approach, we also perform an approximation of the modal forces by considering a spatial discretization of the mode shapes by S points along the streamwise direction and R points along the crosswise direction.…”

mentioning

confidence: 99%

“…For more complex cases, the WPF will be defined on a point mesh and it will be 695 introduced in the numerical model of the panel. In the literature, different authors considering different spatial methods ( [24], [25], [28]) already showed that the mesh of a finite element model should be defined carefully in this case for describing both, the structure behavior and the aerodynamic field. For studying the influence of the definition of the WPF on a discretized mesh in the framework of the proposed approach, let us considered a first mesh of points on the 700…”

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confidence: 99%

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Simulation of the pressure field beneath a turbulent boundary layer using realizations of uncorrelated wall plane waves

Maxit

2016

The Journal of the Acoustical Society of America

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This paper investigates the modelling of a vibrating structure excited by a turbulent boundary 15 layer (TBL). Although the wall pressure field (WPF) of the TBL constitute a random excitation, the element-based methods generally used for describing complex mechanical structures consider deterministic loads. The response of the structure to a random excitation like TBL is generally deduced from calculations of numerous Frequency Response Functions. The result is that the process requires costly computational resources. To tackle this issue, an efficient 20 process is proposed for generating realizations of the WPF corresponding to the TBL. This process is based on a formulation of the problem in the wave-number space and the interpretation of the wall pressure field as uncorrelated wall plane waves. Once the WPF have been synthesized, the local vibroacoustic responses are calculated for the different realizations and averaged together in the last step. A numerical application of this process to a plate beneath 25 a TBL is used to verify its efficiency and ability to reproduce the partial space correlation of the excitation. Finally an application on a stiffened panel modelled with the finite element method is proposed to illustrate the interest of the proposed process.Running title: Numerical synthesis of random pressure field 30

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Section: Models) Discussion On Different Models Andmentioning

confidence: 99%

“…Eq. (27)(28)). For a complex panel, the forced response or the mode shapes can be calculated by FEM and can be known at discrete points (i.e.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Simulation of the pressure field beneath a turbulent boundary layer using realizations of uncorrelated wall plane waves

Maxit

2016

The Journal of the Acoustical Society of America

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“…Innovative and fast solutions for the stochastic response of a plate have been carried out by many researchers [15][16][17][18][19]. Birgersson et al [15] used spectral finite element and dynamic stiffness methods to analyze the autospectral density of the velocity of a plate due to a turbulent boundary layer.…”

Section: Introductionmentioning

confidence: 99%

Prediction of the response of a thin structure subjected to a turbulent boundary-layer-induced random pressure field

Esmailzadeh¹,

Lakis²,

Thomas³

et al. 2009

Journal of Sound and Vibration

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Wave Finite Element Schemes for Vibrations and Noise Under Turbulent Boundary Layer Excitation

Errico

Franco

Rosa

et al. 2021

Flinovia—Flow Induced Noise and Vibration Issues and Aspects-Iii

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Exact and numerical responses of a plate under a turbulent boundary layer excitation

Cited by 74 publications

References 27 publications

Simulation of the pressure field beneath a turbulent boundary layer using realizations of uncorrelated wall plane waves

Simulation of the pressure field beneath a turbulent boundary layer using realizations of uncorrelated wall plane waves

Prediction of the response of a thin structure subjected to a turbulent boundary-layer-induced random pressure field

Wave Finite Element Schemes for Vibrations and Noise Under Turbulent Boundary Layer Excitation

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