Friedewald, Diliana (2022) Large-Amplitude Gusts on the NASA Common Research Model. In: AIAA Aviation 2022 Forum. AIAA AVIATION Forum 2022, 2022-06-27 - 2022-07-01, Chicago, Illinois, USA. doi: 10.2514/6.2022-3443.
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Offizielle URL: https://arc.aiaa.org/doi/10.2514/6.2022-3443
Kurzfassung
Up to date, there is only little knowledge on the topic of unsteady nonlinear transonic flow, which results from large-amplitude excitations. The Certification Specifications for Large Aeroplanes, however, demand loads computations for large-amplitude excitations e.g. for gust encounters of an aircraft. In this paper, numerical solutions to the Unsteady Reynolds-Averaged Navier-Stokes (URANS) equations will be used to analyze gust responses of a transport aircraft configuration for a variety of monofrequent gusts with different lengths and amplitudes. It is shown that the unsteady nonlinear responses can lead to lower maximum lift values and lower lift derivatives compared to their time-linearized reference. These nonlinear effects diminish with increasing frequency (i.e. decreasing gust length). Though the turbulence model of Spalart and Allmaras shows completely different separation patterns than the differential Reynolds-stress model used, the variation of the turbulence model does not alter the overall qualitative findings, but has an effect on the quantitative values only.
elib-URL des Eintrags: | https://elib.dlr.de/187231/ | ||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||
Zusätzliche Informationen: | Video presentation: https://doi.org/10.2514/6.2022-3443.vid | ||||||||
Titel: | Large-Amplitude Gusts on the NASA Common Research Model | ||||||||
Autoren: |
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Datum: | Juni 2022 | ||||||||
Erschienen in: | AIAA Aviation 2022 Forum | ||||||||
Referierte Publikation: | Ja | ||||||||
Open Access: | Nein | ||||||||
Gold Open Access: | Nein | ||||||||
In SCOPUS: | Ja | ||||||||
In ISI Web of Science: | Nein | ||||||||
DOI: | 10.2514/6.2022-3443 | ||||||||
Status: | veröffentlicht | ||||||||
Stichwörter: | gust excitation, unsteady nonlinear aerodynamics, URANS, CFD, | ||||||||
Veranstaltungstitel: | AIAA AVIATION Forum 2022 | ||||||||
Veranstaltungsort: | Chicago, Illinois, USA | ||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||
Veranstaltungsbeginn: | 27 Juni 2022 | ||||||||
Veranstaltungsende: | 1 Juli 2022 | ||||||||
Veranstalter : | AIAA | ||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||
HGF - Programm: | Luftfahrt | ||||||||
HGF - Programmthema: | keine Zuordnung | ||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||
DLR - Forschungsgebiet: | L - keine Zuordnung | ||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - keine Zuordnung | ||||||||
Standort: | Göttingen | ||||||||
Institute & Einrichtungen: | Institut für Aeroelastik > Aeroelastische Simulation | ||||||||
Hinterlegt von: | Friedewald, Diliana | ||||||||
Hinterlegt am: | 22 Aug 2022 14:12 | ||||||||
Letzte Änderung: | 24 Apr 2024 20:48 |
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