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Article Dans Une Revue Acta Acustica united with Acustica Année : 2003

Model of Frequency Averaged Injected Power into a Plate Excited by a Turbulent Boundary Layer

Résumé

The excitation of structures by turbulent boundary layers has been intensively studied and different models have been established to describe the boundary pressure cross spectrum. When dealing with energy methods like Statistical Energy Analysis (SEA), one is more interested in power injected into the plate than boundary pressure cross spectrum. This paper deals with the derivation of a model for injected power in a plate excited by a turbulent boundary layer. For the sake of simplicity, it is based on Corcos’ and Efimtsov’s models for boundarypressure, but a more sophisticated model can be used. The established model for frequency averaged injected power (FAIP) leads to a simple expression based on a characteristic function depending on the boundary pressure model. Comparisons of the FAIP model with exact calculations are presented. These comparisons demonstrate that in third octave bands, the FAIP model gives good results whatever model for boundary pressure we use.
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Dates et versions

hal-01472456 , version 1 (20-02-2017)

Identifiants

  • HAL Id : hal-01472456 , version 1

Citer

Nicolas Totaro, Jean-Louis Guyader. Model of Frequency Averaged Injected Power into a Plate Excited by a Turbulent Boundary Layer. Acta Acustica united with Acustica, 2003, 89, pp.647-657. ⟨hal-01472456⟩
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