Quero, David und Kaiser, Christoph und Nitzsche, Jens (2024) A general solver for the prediction of flutter and buffet onset. International Forum on Aeroelasticity and Structural Dynamics, IFASD 2024, 2024-06-17 - 2024-06-21, Den Haag, Niederlande.
PDF
- Nur DLR-intern zugänglich
1MB |
Offizielle URL: https://conf.ifasd2024.nl/ifasd2024-proceedings/proceedings/display_manuscript/112.htm
Kurzfassung
A versatile solver capable of predicting both flutter and buffet onset, while considering structural feedback, is introduced. The methodology involves computing the (generalized) aerodynamic forces using a linear-frequency-domain (LFD) solver based on linearized unsteady Reynolds-averaged Navier-Stokes equations (URANS) with an appropriate turbulence closure model. A state-space model of the aerodynamic forces is generated through interpolation of the frequency-domain samples, which is the basis of the p-L method. Eigenvalues corresponding to fluid modes may be directly determined, eliminating the need for a priori pole selection as required by traditional rational function approximation techniques. Consequently, the pre- buffet frequency is accurately represented by the imaginary part of the fluid mode's eigenvalue. With this representation of the fluid modes, a flutter solver is derived, which is able to predict both classical flutter and buffet onset values. The solver is applied to the supercritical OAT15A airfoil in the pre-buffet region, verifying its capability to predict both flutter and buffet onset values.
elib-URL des Eintrags: | https://elib.dlr.de/205025/ | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||
Titel: | A general solver for the prediction of flutter and buffet onset | ||||||||||||||||
Autoren: |
| ||||||||||||||||
Datum: | 2024 | ||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||
Open Access: | Nein | ||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||
Stichwörter: | Flutter, buffet, transonic flow, Loewner framework, aeroelastic derivatives, mode tracking | ||||||||||||||||
Veranstaltungstitel: | International Forum on Aeroelasticity and Structural Dynamics, IFASD 2024 | ||||||||||||||||
Veranstaltungsort: | Den Haag, Niederlande | ||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||
Veranstaltungsbeginn: | 17 Juni 2024 | ||||||||||||||||
Veranstaltungsende: | 21 Juni 2024 | ||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||
HGF - Programmthema: | Effizientes Luftfahrzeug | ||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||
DLR - Forschungsgebiet: | L EV - Effizientes Luftfahrzeug | ||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Virtuelles Flugzeug und Validierung | ||||||||||||||||
Standort: | Göttingen | ||||||||||||||||
Institute & Einrichtungen: | Institut für Aeroelastik > Aeroelastische Simulation | ||||||||||||||||
Hinterlegt von: | Quero-Martin, David | ||||||||||||||||
Hinterlegt am: | 02 Jul 2024 23:14 | ||||||||||||||||
Letzte Änderung: | 02 Jul 2024 23:14 |
Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags