Estimation of aerodynamic noise of diaphragms through IEC 60534-8-3 and CFD

Estimation of aerodynamic noise of diaphragms through IEC 60534-8-3 and CFD

The aerodynamic noise emitted by a subsonic flow of dry air through an orifice plate is estimated in terms of internal sound power level and external sound pressure level (SPL) by application of the methodology described in the international standard IEC 60534-8-3. A shortcoming of the standard in d...

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Main Authors: Luca Fenini, Luca Nicola Quaroni, Stefano Malavasi
Format: Article
Language:English
Published: SAGE Publishing 2021-03-01
Series:Measurement + Control
Online Access:https://doi.org/10.1177/0020294021989764
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spelling doaj-d110bb6a84d445b5b907f00dcfd7bf762021-04-22T22:03:47ZengSAGE PublishingMeasurement + Control0020-29402021-03-015410.1177/0020294021989764Estimation of aerodynamic noise of diaphragms through IEC 60534-8-3 and CFDLuca FeniniLuca Nicola QuaroniStefano MalavasiThe aerodynamic noise emitted by a subsonic flow of dry air through an orifice plate is estimated in terms of internal sound power level and external sound pressure level (SPL) by application of the methodology described in the international standard IEC 60534-8-3. A shortcoming of the standard in defining the efficiency of the transformation of the mechanical energy of the flow into acoustic energy is discussed. Experimental evidence of the matter is also described. An alternative model employing the resolution of Reynolds Averaged Navier-Stokes equations (RANS) by means of Computational Fluid Dynamics (CFD) techniques for the calculation of the acoustic power generated by the turbulent flow through the orifice plate is applied so as to overcome the issue.https://doi.org/10.1177/0020294021989764
collection DOAJ
language English
format Article
sources DOAJ
author Luca Fenini
Luca Nicola Quaroni
Stefano Malavasi
spellingShingle Luca Fenini
Luca Nicola Quaroni
Stefano Malavasi
Estimation of aerodynamic noise of diaphragms through IEC 60534-8-3 and CFD
Measurement + Control
author_facet Luca Fenini
Luca Nicola Quaroni
Stefano Malavasi
author_sort Luca Fenini
title Estimation of aerodynamic noise of diaphragms through IEC 60534-8-3 and CFD
title_short Estimation of aerodynamic noise of diaphragms through IEC 60534-8-3 and CFD
title_full Estimation of aerodynamic noise of diaphragms through IEC 60534-8-3 and CFD
title_fullStr Estimation of aerodynamic noise of diaphragms through IEC 60534-8-3 and CFD
title_full_unstemmed Estimation of aerodynamic noise of diaphragms through IEC 60534-8-3 and CFD
title_sort estimation of aerodynamic noise of diaphragms through iec 60534-8-3 and cfd
publisher SAGE Publishing
series Measurement + Control
issn 0020-2940
publishDate 2021-03-01
description The aerodynamic noise emitted by a subsonic flow of dry air through an orifice plate is estimated in terms of internal sound power level and external sound pressure level (SPL) by application of the methodology described in the international standard IEC 60534-8-3. A shortcoming of the standard in defining the efficiency of the transformation of the mechanical energy of the flow into acoustic energy is discussed. Experimental evidence of the matter is also described. An alternative model employing the resolution of Reynolds Averaged Navier-Stokes equations (RANS) by means of Computational Fluid Dynamics (CFD) techniques for the calculation of the acoustic power generated by the turbulent flow through the orifice plate is applied so as to overcome the issue.
url https://doi.org/10.1177/0020294021989764
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AT lucanicolaquaroni estimationofaerodynamicnoiseofdiaphragmsthroughiec6053483andcfd
AT stefanomalavasi estimationofaerodynamicnoiseofdiaphragmsthroughiec6053483andcfd
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