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Efficient Aero-Acoustic Simulation of the HART II Rotor with the Compact Pade Scheme

Wilke, Gunther (2016) Efficient Aero-Acoustic Simulation of the HART II Rotor with the Compact Pade Scheme. In: Efficient Aero-Acoustic Simulation of the HART II Rotor with the Compact Pade Scheme. 42nd European Rotorcraft Forum, Lille, France.

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Kurzfassung

One major diffculty in the design of quiet rotor blades is the correct numerical prediction of blade vortex interaction (BVI) noise in descent flight. Current second order spatial discretization schemes inherently have too much numerical dissipation to correctly conserve vorticity in the computational fluid dynamics (CFD) simulation. Higher order methods have proven their worthiness to alleviate this problem, yet are costly in terms of computational resources. In this paper, the 4th order implicit compact Pade scheme based on the finite difference formulation of the RANS equations is employed to convect the vortices in the simulation. The approach is paired with the classical finite volume approach with the Jameson-Schmidt-Turkel (JST) scheme. The robustness and flexibility of the JST scheme are exploited in the nearfield of the rotor blades and fuselage, while in the mid- and farfield the Pade scheme is utilized. This approach is validated against the experimental data of the HART II wind tunnel campaign. Different grid resolutions are examined as well as simulation strategies ranging from inviscid isolated rotor simulation up to viscous simulation including the fuselage. This hybrid simulation technique demonstrates the usefulness due to its high efficiency, while for design purposes the simplified physics yield an additional speed-up of the turn-around time.

elib-URL des Eintrags:https://elib.dlr.de/106577/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Efficient Aero-Acoustic Simulation of the HART II Rotor with the Compact Pade Scheme
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Wilke, Gunthergunther.wilke (at) dlr.dehttps://orcid.org/0000-0002-1915-5307NICHT SPEZIFIZIERT
Datum:6 September 2016
Erschienen in:Efficient Aero-Acoustic Simulation of the HART II Rotor with the Compact Pade Scheme
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der HerausgeberHerausgeber-ORCID-iDORCID Put Code
Wilke, Gunthergunther.wilke (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Status:veröffentlicht
Stichwörter:Aero-acoustic computation, FW-H, BVI, HART II
Veranstaltungstitel:42nd European Rotorcraft Forum
Veranstaltungsort:Lille, France
Veranstaltungsart:internationale Konferenz
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Hubschrauber
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L RR - Rotorcraft Research
DLR - Teilgebiet (Projekt, Vorhaben):L - Der virtuelle Drehflügler (alt)
Standort: Braunschweig
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Hubschrauber
Hinterlegt von: Wilke, Gunther Andreas
Hinterlegt am:14 Okt 2016 13:35
Letzte Änderung:31 Jul 2019 20:03

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