Schwarz, Thorsten und Wentrup, Marc und Wilke, Gunther Andreas (2017) The efficient use of CFD in Rotorcraft Optimization. AIAA SciTech Forum 2017, 2017-01-09 - 2017-01-13, Grapevine, Texas, USA.
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Kurzfassung
Computational Fluid Dynamics enables the accurate prediction of the flow about complete rotorcraft configurations. However, depending on the complexity of test case under consideration the execution time of a single CFD computation may be prohibitive. Therefore, efficient optimization strategies are required. Two examples of recent optimizations by DLR are reported: A first example is given by the optimization of a helicopter fuselage to minimize drag. The adjoint equations are solved to efficiently compute the design sensitivities for up to 200 design variables and to find the optimum with a gradient based optimizer. A second example is given by the multi-objective optimization of a helicopter rotor blade using ten design variables. The Pareto-front for the goal functions hover and forward flight performance is predicted by surrogate based optimization. A variable-fidelity approach combining low- and high fidelity predictions is employed to reduce the number of required high-fidelity samples.
elib-URL des Eintrags: | https://elib.dlr.de/111206/ | ||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||
Titel: | The efficient use of CFD in Rotorcraft Optimization | ||||||||||||||||
Autoren: |
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Datum: | 12 Januar 2017 | ||||||||||||||||
Referierte Publikation: | Nein | ||||||||||||||||
Open Access: | Nein | ||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||
Stichwörter: | CFD, optimization, adjoint, surrogate model, helicopter, rotorcraft | ||||||||||||||||
Veranstaltungstitel: | AIAA SciTech Forum 2017 | ||||||||||||||||
Veranstaltungsort: | Grapevine, Texas, USA | ||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||
Veranstaltungsbeginn: | 9 Januar 2017 | ||||||||||||||||
Veranstaltungsende: | 13 Januar 2017 | ||||||||||||||||
Veranstalter : | AIAA | ||||||||||||||||
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: | Schwarz, Dr.-Ing. Thorsten | ||||||||||||||||
Hinterlegt am: | 24 Feb 2017 09:20 | ||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:16 |
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