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A POD-based reduced order modeling approach for the efficient computation of high-lift aerodynamics

Mifsud, Michael und Zimmermann, Ralf und Sippli, Jan und Görtz, S. (2011) A POD-based reduced order modeling approach for the efficient computation of high-lift aerodynamics. International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control with Applications to Industrial and Societal Problems (Eurogen 2011), 2011-09-14 - 2011-09-16, Capua, Italy.

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Kurzfassung

In this paper we propose a methodology for the efficient and robust computation of the aerodynamics of high-lift configurations. A reduced-order modeling approach is considered, based on the proper orthogonal decomposition (POD) of a set of high-fidelity CFD solutions or snapshots from which a reduced basis is evaluated. From this reduced-order model (ROM), a solution is predicted at an angle of attack which is outside the space spanned by the POD basis vectors. The ROM solution is subsequently used to initialize the flow solver for an accurate calculation of the aerodynamics at the same flow condition. This procedure is conducted recursively for a series of angles of attack, whereby for each and every ROM prediction, the snapshots set is augmented with the latest CFD computed flow solution. Using this methodology, a considerable reduction in the total number of iterations to reach the steady-state solution is observed when compared with conventional computational techniques used in industry for a series of computations such as drag polar computations. Ultimately, a preliminary investigation is conducted on the behavior of the reduced-order modeling approach at static stall angles of attack where aerodynamic hysteresis may occur and the aerodynamic coefficients are found to be multiple-valued functions of the angle of attack.

elib-URL des Eintrags:https://elib.dlr.de/72509/
Dokumentart:Konferenzbeitrag (Paper)
Titel:A POD-based reduced order modeling approach for the efficient computation of high-lift aerodynamics
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Mifsud, MichaelMichael.Mifsud (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Zimmermann, RalfRalf.Zimmermann (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Sippli, JanJan.Sippli (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Görtz, S.Stefan.Görtz (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:14 September 2011
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter: proper orthogonal decomposition, reduced-order modeling, surrogate modeling, CFD, high-lift configuration.
Veranstaltungstitel:International Conference on Evolutionary and Deterministic Methods for Design, Optimization and Control with Applications to Industrial and Societal Problems (Eurogen 2011)
Veranstaltungsort:Capua, Italy
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:14 September 2011
Veranstaltungsende:16 September 2011
Veranstalter :CIRA Italy
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Starrflügler (alt)
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Starrflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Simulation & Validierung (alt)
Standort: Braunschweig
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > CASE
Hinterlegt von: Mifsud, Michael
Hinterlegt am:07 Dez 2011 15:31
Letzte Änderung:24 Apr 2024 19:38

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