elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Datenschutz | Kontakt | English
Schriftgröße: [-] Text [+]

Investigation of Sound Generation and Transmission Effects Through the ACAT1 Fan Stage using Compressed Sensing-based Mode Analysis

Behn, Maximilian und Tapken, Ulf (2019) Investigation of Sound Generation and Transmission Effects Through the ACAT1 Fan Stage using Compressed Sensing-based Mode Analysis. In: 25th AIAA/CEAS Aeroacoustics Conference, 2019. 25th AIAA/CEAS Aeracoustics Conference, 2019-05-20 - 2019-05-23, Delft, Niederlande. doi: 10.2514/6.2019-2502.

[img] PDF
6MB

Offizielle URL: https://arc.aiaa.org/doi/10.2514/6.2019-2502

Kurzfassung

In an extensive measurement campaign at the UFFA test rig of AneCom AeroTest in Wildau, Germany, the sound field generated from the ACAT1 fan stage was measured by several dynamic pressure sensor arrays of different geometrical arrangements at the inlet, interstage and bypass section. The sparse ring arrays with irregular and optimised geometries are utilised in combination with the Compressed Sensing-based mode analysis in order to investigate the tonal and broadband sound generation and transmission with high resolution. From the azimuthal mode spectra, the relation between the cut-on mode range at the sources and the dominant modes at the measurement sections is observed and used to determine the contribution of different sound generation mechanisms. With the help of interstage mode analyses strong rotor-coherent contributions due to rotor wake irregularities are identified and the rotor-shielding effect is assessed. The dependencies of the broadband mode spectra with respect to the operation points and working lines are shown and the contribution of stator and rotor bound sources is investigated. Results indicate that mode scattering at the stator vane row has a significant influence on the downstream radiated sound field. Evidence is further found for the occurrence of the acoustic tunnel effect, where cut-off modes excited at the stator leading edge become cut-on during the propagation through the inter-vane channels. This effect triggers mode scattering towards rotor counter-rotating modes and increases the sound radiation from fan stages.

elib-URL des Eintrags:https://elib.dlr.de/133466/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Investigation of Sound Generation and Transmission Effects Through the ACAT1 Fan Stage using Compressed Sensing-based Mode Analysis
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Behn, MaximilianMaximilian.Behn (at) dlr.dehttps://orcid.org/0000-0001-8478-8269NICHT SPEZIFIZIERT
Tapken, UlfUlf.Tapken (at) dlr.dehttps://orcid.org/0000-0002-0870-1253173176328
Datum:Mai 2019
Erschienen in:25th AIAA/CEAS Aeroacoustics Conference, 2019
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Nein
DOI:10.2514/6.2019-2502
Status:veröffentlicht
Stichwörter:Mode Analysis, Compressed Sensing, sparse ring arrays, fan noise
Veranstaltungstitel:25th AIAA/CEAS Aeracoustics Conference
Veranstaltungsort:Delft, Niederlande
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:20 Mai 2019
Veranstaltungsende:23 Mai 2019
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Antriebssysteme
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L ER - Engine Research
DLR - Teilgebiet (Projekt, Vorhaben):L - Verdichtertechnologien (alt)
Standort: Berlin-Charlottenburg
Institute & Einrichtungen:Institut für Antriebstechnik > Triebwerksakustik
Hinterlegt von: Behn, Maximilian
Hinterlegt am:14 Jan 2020 12:21
Letzte Änderung:05 Dez 2024 15:32

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Gestaltung Webseite und Datenbank: Copyright © Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.