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Hilfer, Michael and Behn, Maximilian and Klein, Christian and Ahlefeldt, Thomas and Tapken, Ulf and Katzenmeier, Lukas and Koop, Lars and Enghardt, Lars (2022) Near-field measurements of stationary and rotating in-duct sound sources with pressure-sensitive paint. In: 28th AIAA/CEAS Aeroacoustics Conference, 2022 (3056), pp. 1-19. American Institute of Aeronautics and Astronautics. 28th AIAA/CEAS Aeroacoustics Conference, 2022-06-14 - 2022-06-17, Southampton, UK. doi: 10.2514/6.2022-3056. ISBN 978-162410664-4.
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Official URL: https://doi.org/10.2514/6.2022-3056
Abstract
Pressure Sensitive Paint (PSP) was applied on a disc, which was situated in a short duct with a diameter of 500 mm. The disc featured an acoustic source, a flush mounted loudspeaker, to investigate its acoustic near-field with high spatial resolution. Experiments were conducted with the disc in stationary and rotating mode. Three different source frequencies were investigated with 2 kHz, 3 kHz and 4 kHz for both stationary and rotating cases. The unsteady near-field of the source was analyzed in terms of spatially averaged spectra. The results of the unsteady near-field measured with pressure sensitive paint are verified by comparison with azimuthal mode spectra from a microphone ring array mounted flush at the outer duct wall and close to the disc. The results provide a sufficient signal-to-noise ratio and a very high spatial resolution of the unsteady pressure field.
| Item URL in elib: | https://elib.dlr.de/186975/ | ||||||||||||||||||||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||||||||||||||
| Additional Information: | DA-07: Duct Acoustics VII: Experimental Duct Acoustics, Published Online:13 Jun 2022, AIAA 2022-3056 eISBN: 978-1-62410-664-4 | ||||||||||||||||||||||||||||||||||||
| Title: | Near-field measurements of stationary and rotating in-duct sound sources with pressure-sensitive paint | ||||||||||||||||||||||||||||||||||||
| Authors: |
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| Date: | 13 June 2022 | ||||||||||||||||||||||||||||||||||||
| Journal or Publication Title: | 28th AIAA/CEAS Aeroacoustics Conference, 2022 | ||||||||||||||||||||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||||||||||||||||||||
| Open Access: | No | ||||||||||||||||||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||||||||||||||||||
| In SCOPUS: | Yes | ||||||||||||||||||||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||||||||||||||||||||
| DOI: | 10.2514/6.2022-3056 | ||||||||||||||||||||||||||||||||||||
| Page Range: | pp. 1-19 | ||||||||||||||||||||||||||||||||||||
| Publisher: | American Institute of Aeronautics and Astronautics | ||||||||||||||||||||||||||||||||||||
| Series Name: | AIAA Meeting papers online | ||||||||||||||||||||||||||||||||||||
| ISBN: | 978-162410664-4 | ||||||||||||||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||||||||||||||
| Keywords: | PSP, iPSP, acoustics, in-duct, near-field, rotating | ||||||||||||||||||||||||||||||||||||
| Event Title: | 28th AIAA/CEAS Aeroacoustics Conference | ||||||||||||||||||||||||||||||||||||
| Event Location: | Southampton, UK | ||||||||||||||||||||||||||||||||||||
| Event Type: | international Conference | ||||||||||||||||||||||||||||||||||||
| Event Start Date: | 14 June 2022 | ||||||||||||||||||||||||||||||||||||
| Event End Date: | 17 June 2022 | ||||||||||||||||||||||||||||||||||||
| Organizer: | AIAA/CEAS | ||||||||||||||||||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||||||||||||||
| HGF - Program: | Aeronautics | ||||||||||||||||||||||||||||||||||||
| HGF - Program Themes: | Efficient Vehicle | ||||||||||||||||||||||||||||||||||||
| DLR - Research area: | Aeronautics | ||||||||||||||||||||||||||||||||||||
| DLR - Program: | L EV - Efficient Vehicle | ||||||||||||||||||||||||||||||||||||
| DLR - Research theme (Project): | L - Virtual Aircraft and Validation | ||||||||||||||||||||||||||||||||||||
| Location: | Berlin-Charlottenburg , Göttingen | ||||||||||||||||||||||||||||||||||||
| Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > Experimental Methods, GO Institute of Propulsion Technology > Engine Acoustic | ||||||||||||||||||||||||||||||||||||
| Deposited By: | Micknaus, Ilka | ||||||||||||||||||||||||||||||||||||
| Deposited On: | 20 Jul 2022 16:40 | ||||||||||||||||||||||||||||||||||||
| Last Modified: | 24 Apr 2024 20:48 |
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