< Back to previous page

Publication

Use of a Generalized Corcos model to predict flow-induced noise in a cavity-plate system

Book Contribution - Book Chapter Conference Contribution

An important problem in the transmission of the sound is the noise due to the pressure fluctuations of a turbulent boundary layer (TBL). The action of the stochastic pressure distribution associated with the turbulence provides the driving force to excite the underlying structure, generating vibration and noise, and therefore, producing acoustic radiation into a back cavity enclosed by the boundary surface. In the following paper, the flow-induced noise in a cavity-plate system is analysed by using a Generalized Corcos model, recently developed by the authors. Analytical method is used to predict the noise transmitted into a rectangular cavity by a flexible plate driven on one side by a stationary TBL. The plate acceleration power spectral density and the interior sound pressure level are provided without the need for computationally costly numerical integration. Results show how the different decay rates of the Generalized Corcos model at low-wavenumber affect the predictions and allow positioning the novel model with respect to other well-established models.
Book: Proceedings of the 27th International Conference on Noise and Vibration Engineering, ISMA2016 & USD2016
Pages: 1319 - 1332
ISBN:9789073802940
Publication year:2016
BOF-keylabel:yes
IOF-keylabel:yes
Authors from:Higher Education
Accessibility:Closed