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Broadband Simulation Of Flow-Induced Noise Generation On Orifice Plates In Air Conditioning Ducts

Spehr, Carsten and Ewert, Roland and Kornow, Oliver and Delfs, Jan (2009) Broadband Simulation Of Flow-Induced Noise Generation On Orifice Plates In Air Conditioning Ducts. 15th AIAA/CEAS Aeroacoustics Conference , 11.-13. May 2009 , Miami, Florida, USA. ISBN 978-1-56347-974-8 .

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Official URL: http://www.aiaa.org

Abstract

In this study the acoustic sources generated by turbulent flow inside internal ducts are studied experimentally and numerically. The noise is generated due to the flow passing orifices as typical components used in the aircraft climate control system. The noise generation was simulated using a two step approach. In the first step the steady incompressible flow problem is simulated using the RANS approach. In the second step the acoustic field is computed using acoustic perturbation equations. The turbulent flow fluctuations are induced via a broadband turbulence model whereby the turbulent vorticities are interpreted as sources producing broadband sound by interaction with the orifices.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Broadband Simulation Of Flow-Induced Noise Generation On Orifice Plates In Air Conditioning Ducts
Authors:
AuthorsInstitution or Email of Authors
Spehr, CarstenUNSPECIFIED
Ewert, RolandUNSPECIFIED
Kornow, OliverUNSPECIFIED
Delfs, JanUNSPECIFIED
Date:2009
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Volume:Vol. 14
Page Range:pp. 1-12
Series Name:DVD-ROM Conference Proceedings
ISBN:978-1-56347-974-8
Status:Published
Keywords:CAA
Event Title:15th AIAA/CEAS Aeroacoustics Conference
Event Location:Miami, Florida, USA
Event Type:international Conference
Event Dates:11.-13. May 2009
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Technical Acoustics
Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Ilka Micknaus
Deposited On:13 Oct 2009 14:52
Last Modified:13 Oct 2009 14:52

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