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Numerical Simulation of Sound Generation and Propagation in and outside a Cabin Air Intake

Konstantinov, Mikhail and Wagner, Claus (2013) Numerical Simulation of Sound Generation and Propagation in and outside a Cabin Air Intake. 62. Deutschen Luft- und Raumfahrtkongress 2013, 10. - 12. Sept. 2013, Stuttgart, Deutschland.

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Official URL: http://www.dglr.de/publikationen/2013/301330.pdf

Abstract

Aerodynamic noise generated by the low Mach number flow in air cabin intake is investigated numerically. For analysis a realistic intake installed DLR's cabin test facility Do728, was chosen. Two independent approaches were used. First, the so called hybrid approach, based an incompressible simulation of the airflow in the intake and Lighthill aeroacoustical analogy was applied, which separates generation and propagation of sound. The flow field was calculated with open source code OpenFOAM and acoustical sources and sound waves propafation were computed with commercial program Virtual.Lab. Second, the flow and acoustical fiel were computed in a Computational Aero Acoustics calculation (CAA) with the Star-CCM* code. The latter simulates both the unsteady turbulent flow and the noise it generates. The results from both calculations were compared and discussed.

Item URL in elib:https://elib.dlr.de/83898/
Document Type:Conference or Workshop Item (Speech)
Additional Information:http://www.dlrk2013.dglr.de; Die endgültigen Manuskripte werden zu einem späteren Zeitpunkt im Internet oder in Rahmen der CEAS-Journale veröffentlicht werden.
Title:Numerical Simulation of Sound Generation and Propagation in and outside a Cabin Air Intake
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Konstantinov, Mikhailmikhail.konstantinov (at) dlr.deUNSPECIFIED
Wagner, Clausclaus.wagner (at) dlr.deUNSPECIFIED
Date:2013
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-6
Series Name:Conference Proceedings on CD-ROM and Online
Status:Published
Keywords:Cabin air intake, LES, DES, CAA, Lighthill' Analogy, Ffowcs Williams and Hawkings equation, SPL
Event Title:62. Deutschen Luft- und Raumfahrtkongress 2013
Event Location:Stuttgart, Deutschland
Event Type:national Conference
Event Dates:10. - 12. Sept. 2013
Organizer:DGLR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Project Next Generation Train II (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Konstantynov, Dr.-Ing.habil. Mykhailo
Deposited On:23 Oct 2013 10:41
Last Modified:08 May 2014 23:18

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