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

Noise shielding simulation of a UAV drone using a coupled DG / fast BEM

Proskurov, Stanislav und Ewert, Roland und Lummer, Markus und Mößner, Michael und Delfs, Jan Werner (2020) Noise shielding simulation of a UAV drone using a coupled DG / fast BEM. DLRK 2020, 2020-09-01 - 2020-09-03, Aachen, Germany.

[img] PDF
1MB

Kurzfassung

The primary focus of our research is on the strong coupling of two advanced Computational Aero-Acoustic (CAA) methods for performing efficient fan tone shielding simulations of unmanned aerial vehicles (UAV) with highly integrated propulsion systems. In particular, the Fast Multipole Boundary Element Method (FM-BEM) which can solve a surface integral based on the Kirchhoff-Helmholtz wave equation is combined with a volume resolving Discontinuous Galerkin (DG) method which is very well suited for the intake duct where strong mean flow gradients are present. The Möhring-Howe acoustic analogy is used during the backward data exchange process for derivation of acoustic velocities in presence of a mean flow.Applying CAA to assess UAV configurations is novel, since acoustics in general comes as a by-product when the configuration is already fixed. There is, however, a technological interest in determining whether the application of rapid turnaround CAA techniques can enhance the capabilities in terms of low noise mission planning, minimising the risk of early acoustic detection. Also, it is highly desirable to reduce noise during take-off and landing. This presents us with a special problem of having to simultaneously deal with a wide range of Mach numbers. On one hand, the acoustic signature of the vehicle is influenced by high-velocity flow entering the intake of the propulsion system. On the other hand, the acoustic effects related to boundary layer ingestion as well as scattering at the intake need to be further investigated and taken into account in a simulation. However, enclosing the entire UAV geometry for performing the wave propagation in 3D is computationally expensive and at the moment, limited to research validation only. Thus, a fast CAA technique that accounts for sound shielding and satisfies the above criteria has been proposed and put forward to discussion at the DLRK 2020 workshop.

elib-URL des Eintrags:https://elib.dlr.de/140411/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Noise shielding simulation of a UAV drone using a coupled DG / fast BEM
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Proskurov, StanislavStanislav.Proskurov (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Ewert, RolandRoland.Ewert (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Lummer, MarkusMarkus.Lummer (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Mößner, MichaelMichael.Moessner (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Delfs, Jan WernerJan.Delfs (at) dlr.dehttps://orcid.org/0000-0001-8893-1747NICHT SPEZIFIZIERT
Datum:1 September 2020
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Aeroacoustics, CAA, Discontinuous Galerkin, DG, fast BEM, FMBEM, UAV, noise shielding, scattering, aeroacoustic simulation
Veranstaltungstitel:DLRK 2020
Veranstaltungsort:Aachen, Germany
Veranstaltungsart:nationale Konferenz
Veranstaltungsbeginn:1 September 2020
Veranstaltungsende:3 September 2020
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Flugzeuge
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Aircraft Research
DLR - Teilgebiet (Projekt, Vorhaben):L - Simulation und Validierung (alt)
Standort: Braunschweig
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Technische Akustik
Hinterlegt von: Proskurov, Stanislav
Hinterlegt am:14 Jan 2021 07:31
Letzte Änderung:24 Apr 2024 20:41

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.