Sánchez-Ortiz, Roberto und Quero, David und Moreno-Ramos, Rubén (2022) Adaptive reduced order model of aeroelastic systems using proper orthogonal decomposition. In: 19th International Forum on Aeroelasticity and Structural Dynamics, IFASD 2022. International Forum on Aeroelasticity and Structural Dynamics (IFASD) 2022, 2022-06-13 - 2022-06-17, Madrid, Spanien. ISBN 978-840942353-8.
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Kurzfassung
An adaptive reduced order method is considered to simulate unsteady inviscid aeroelastic scenarios for the AGARD 445.6 wing benchmark case and turbulent simulations of a NACA 0012 airfoil. The method is based on Proper Orthogonal Decomposition (POD) and it is constructed using snapshots from a Computational Fluid Dynamics (CFD) solver, which is coupled with a modal structural solver. The method adaptively switches between the full order model (FOM) and the reduced order model (ROM), which is decided on the fly by monitoring a residual estimate. A least-squares minimisation and a Galerkin projection have been used to evolve the ROM, both applied to a residual calculated only on a subset of cells, which significantly further reduces the computational effort. A collocation method for cell selection is performed automatically via LU decomposition. Various implementations of the method are discussed, such as the inclusion of Dual Time-Stepping terms in the ROM iterations, QR reorthogonalisation of POD modes, and the creation of a separate POD for the turbulent equations. Results of forced motion cases and aeroelastic responses to subcritical flow conditions are presented. The outcome is an efficient and robust method with a reduction down to 11% of the CPU time required to compute a full CFD solution.
elib-URL des Eintrags: | https://elib.dlr.de/187886/ | ||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||
Titel: | Adaptive reduced order model of aeroelastic systems using proper orthogonal decomposition | ||||||||||||||||
Autoren: |
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Datum: | 2022 | ||||||||||||||||
Erschienen in: | 19th International Forum on Aeroelasticity and Structural Dynamics, IFASD 2022 | ||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||
Open Access: | Ja | ||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||
ISBN: | 978-840942353-8 | ||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||
Stichwörter: | Adaptive Reduced Order Models, Proper Orthogonal Decomposition, Computational Aeroelasticity, CFD, Galerkin Projection | ||||||||||||||||
Veranstaltungstitel: | International Forum on Aeroelasticity and Structural Dynamics (IFASD) 2022 | ||||||||||||||||
Veranstaltungsort: | Madrid, Spanien | ||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||
Veranstaltungsbeginn: | 13 Juni 2022 | ||||||||||||||||
Veranstaltungsende: | 17 Juni 2022 | ||||||||||||||||
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: | 22 Aug 2022 14:37 | ||||||||||||||||
Letzte Änderung: | 30 Okt 2024 16:13 |
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