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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
AN OPTIMAL NUMERICAL-ANALYTICAL METHODOLOGY FOR MULTIPLE PERFORATED PLATES IN DUCTS
Submission Author:
ANDRE BARROUIN MELO , MG , Brazil
Co-Authors:
ANDRE BARROUIN MELO
Presenter: ANDRE BARROUIN MELO
doi://10.26678/ABCM.ENCIT2020.CIT20-0083
Abstract
Many researchers, articles, and dissertations address different models for perforated plates. However, no literature content helps engineers as their correct application for a set of attenuating plates in a case study. Therefore, the proposed work suggests an optimal methodology for applying a set of perforated plates inside ducts. The developed analysis presents a unique and optimal numerical-analytical methodology for the application of the perforated plate aiming at the attenuation of industrial noise in high-speed flows. Through the application of the Transfer Matrix Method (TMM) coupled with the Finite Element Method (FEM) and the finite volume method (FVM), an optimum procedure is presented for the placement and dimensioning of perforated plates in ducts with high speed flows. The applied methodology is validated through a case study presented and confirms the validity of its use for calculating the speed inside the holes of a perforated plate and the best set of those inside a duct. Additionally, it shows the understanding of the flow downstream of a reduction valve that causes the noise phenomenon, as well as the attenuation influence of fluidic parameters under the action of a passive reactive device.
Keywords
Aeroacoustics, Perforated Plates, FEM, CFD, Transfer Matrix Method
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