A Comparison of Models for the Wavenumber–frequency Spectrum of Turbulent Boundary Layer Pressures

Graham, W. R. M.

doi:10.1006/jsvi.1997.1114

Cited by 231 publications

(113 citation statements)

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“…comparisons with experiments can be found in [5][6][7][8] for the Auto Spectrum Density (ASD) function and in [8][9][10] for the normalized Cross Spectrum Density (CSD) function. 55 -Finally, a vibro-acoustic model is used to estimate the response of the structure to the pressure fluctuations.…”

Section: Models) Discussion On Different Models Andmentioning

confidence: 99%

“…(3.18) to (3.20) of Ref. [10]. The empirical constants given after these 450 equations in this reference are also considered in the present paper.…”

mentioning

confidence: 98%

“…The second model of WPF considered for the numerical applications is the Chase model [10,43]. It has been deduced from theoretical developments based on the Poisson equation and it depends on numerous empirical parameters.…”

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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%

“…(3.18) to (3.20) of Ref. [10]. The empirical constants given after these 450 equations in this reference are also considered in the present paper.…”

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confidence: 98%

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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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“…A comparison between these models has been performed by Graham (1997) and Hambric et al (2004). In these models, the pressure field is assumed to be axially homogeneous.…”

Section: Introductionmentioning

confidence: 99%

Predicting turbulence-induced vibration in axial annular flow by means of large-eddy simulations

Ridder

Degroote

Tichelen

et al. 2016

Journal of Fluids and Structures

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Turbulence-induced vibration is typically considered as a type of vibration with one-way coupling between the fluid flow and the structural motion: the turbulence creates an incident force field on the structure, but the structural displacement does not influence the turbulence. It is however challenging to measure the turbulence forcing function experimentally. In this article, the forcing function in annular flow is computed by means of Large-Eddy Simulations. The pressure spectrum is applied to the inner cylinder and the resulting vibration is computed. It is shown that the commonly used multiplication hypothesis does not hold for the present results. The computed spectrum showed an upper limit to the coherence length. The results of these computations are compared to experimental results available in literature and to semi-empirical models. The predicted displacements compared well with experimental results.

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“…A recent comparison of models for the wavenumber-frequency spectrum of turbulent boundary layer pressures was published by Graham (1997). His work focused on the pressure fields of airframes at subsonic flows.…”

Section: Introductionmentioning

confidence: 99%

On Modeling Structural Excitations by Low Speed Turbulent Boundary Layer Flows

Hwang¹,

Bonness²,

Hambric³

2003

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A Comparison of Models for the Wavenumber–frequency Spectrum of Turbulent Boundary Layer Pressures

Cited by 231 publications

References 0 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

Predicting turbulence-induced vibration in axial annular flow by means of large-eddy simulations

On Modeling Structural Excitations by Low Speed Turbulent Boundary Layer Flows

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