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RANS/CAA based Prediction of Jet Mixing Noise in Cruise Flight

Appel, Christina and Rossignol, Karl-Stéphane and Klabes, Alexander and Neifeld, Andrej and Herr, Michaela and Ewert, Roland (2014) RANS/CAA based Prediction of Jet Mixing Noise in Cruise Flight. 20th AIAA/CEAS Aeroacoustics Conference, 16.-20. Juni 2014, Atlanta, GA, USA.

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Besides turbulent boundary layer induced excitation noise, jet noise is the second most important aeroacoustic source for aircraft cabin noise. A goal within the DLR project ECCO (Enhanced Cabin Comfort Computations) was to improve current cabin noise pre- diction approaches. Within the framework of the project ECCO RANS (Reynolds Averaged Navier Stokes) and CAA (Computational Aero Acoustics) computations for jet noise at cruise conditions have been carried out. Especially at high cruise Mach numbers forward ight e�ects have a clear impact on the radiated jet noise. These e�ects are well known from experiments and discussed detailed in the literature. The outcomes of these studies, e.g. scaling laws, will be used to verify the simulated jet noise spectra. Furthermore in- ight surface pressure spectra, which have been recorded during ight tests in the framework of the German national (LuFo IV) project SIMKAB (Simpli�ed Cabin), are discussed here and compared with the simulations. In order to extend the validation data base to a more generic case a single stream jet (SSJ) with di�erent jet and co ow velocities numerically and experimentally investigated.

Item URL in elib:https://elib.dlr.de/91191/
Document Type:Conference or Workshop Item (Speech)
Title:RANS/CAA based Prediction of Jet Mixing Noise in Cruise Flight
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Appel, Christinachristina.appel (at) dlr.deUNSPECIFIED
Rossignol, Karl-Stéphanekarl-stephane.rossignol (at) dlr.deUNSPECIFIED
Klabes, Alexanderalexander.klabes (at) dlr.deUNSPECIFIED
Neifeld, Andrejandrej.neifeld (at) dlr.deUNSPECIFIED
Herr, Michaelamichaela.herr (at) dlr.deUNSPECIFIED
Ewert, Rolandroland.ewert (at) dlr.deUNSPECIFIED
Date:June 2014
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:CAA, Jet Noise Prediction
Event Title:20th AIAA/CEAS Aeroacoustics Conference
Event Location:Atlanta, GA, USA
Event Type:international Conference
Event Dates:16.-20. Juni 2014
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Appel, Christina
Deposited On:20 Oct 2014 13:09
Last Modified:31 Jul 2019 19:48

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