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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, 2014-06-16 - 2014-06-20, Atlanta, GA, USA.
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Abstract
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/ | ||||||||||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||||||
| Title: | RANS/CAA based Prediction of Jet Mixing Noise in Cruise Flight | ||||||||||||||||||||||||||||
| Authors: |
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| Date: | June 2014 | ||||||||||||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||||||||||||
| Open Access: | Yes | ||||||||||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||||||
| Keywords: | CAA, Jet Noise Prediction | ||||||||||||||||||||||||||||
| Event Title: | 20th AIAA/CEAS Aeroacoustics Conference | ||||||||||||||||||||||||||||
| Event Location: | Atlanta, GA, USA | ||||||||||||||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||||||||||||||
| Event Start Date: | 16 June 2014 | ||||||||||||||||||||||||||||
| Event End Date: | 20 June 2014 | ||||||||||||||||||||||||||||
| Organizer: | AIAA/CEAS | ||||||||||||||||||||||||||||
| 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: | 24 Apr 2024 19:57 |
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- RANS/CAA based Prediction of Jet Mixing Noise in Cruise Flight. (deposited 20 Oct 2014 13:09) [Currently Displayed]
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