Streitenberger, Kilian und Nitzsche, Jens (2024) Investigation of Vortex-induced Vibrations to compare Reynolds-Average Navier-Stokes and Detached-Eddy Simulations. International Forum on Aeroelasticity and Structural Dynamics, IFASD 2024, 2024-06-17 - 2024-06-20, Den Haag, Niederlande.
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Kurzfassung
We investigate vortex-induced vibrations (VIV) of a vertically spring-suspended NACA0021 airfoil at very high angles of attack of 60° and 70° at a chord Reynolds number of 2.7 × 10^5 by comparison of two-dimensional Reynolds-averaged Navier-Stokes (RANS) and three-dimensional delayed detached-eddy (DDES) simulations. For the non-moving airfoil, the simulated flow field is already highly unsteady due to pronounced wake vortex shedding with a dominant Strouhal number of Sr = 0.19 and with large qualitative differences in the spectral content of RANS and DDES integral forces. These differences decrease significantly when the airfoil is conducting sine-like motions either by prescribed forcing or via free fluidstructure interaction. No major differences occur between RANS and DDES in the resulting maximum VIV limit-cycle amplitudes under lock-in conditions, while the lock-in frequency range is slightly narrower for DDES. During lock-in a remarkable reduction in the turbulent intensity can be observed in the scale-resolving simulations.
elib-URL des Eintrags: | https://elib.dlr.de/205579/ | ||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||
Titel: | Investigation of Vortex-induced Vibrations to compare Reynolds-Average Navier-Stokes and Detached-Eddy Simulations | ||||||||||||
Autoren: |
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Datum: | 18 Juni 2024 | ||||||||||||
Referierte Publikation: | Ja | ||||||||||||
Open Access: | Ja | ||||||||||||
Gold Open Access: | Nein | ||||||||||||
In SCOPUS: | Nein | ||||||||||||
In ISI Web of Science: | Nein | ||||||||||||
Status: | veröffentlicht | ||||||||||||
Stichwörter: | Vortex-induced Vibrations, Limit-cycle Oscillations, Lock-in, Detached-Eddy Simulation | ||||||||||||
Veranstaltungstitel: | International Forum on Aeroelasticity and Structural Dynamics, IFASD 2024 | ||||||||||||
Veranstaltungsort: | Den Haag, Niederlande | ||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||
Veranstaltungsbeginn: | 17 Juni 2024 | ||||||||||||
Veranstaltungsende: | 20 Juni 2024 | ||||||||||||
HGF - Forschungsbereich: | Energie | ||||||||||||
HGF - Programm: | Materialien und Technologien für die Energiewende | ||||||||||||
HGF - Programmthema: | Photovoltaik und Windenergie | ||||||||||||
DLR - Schwerpunkt: | Energie | ||||||||||||
DLR - Forschungsgebiet: | E SW - Solar- und Windenergie | ||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | E - Windenergie, L - Virtuelles Flugzeug und Validierung | ||||||||||||
Standort: | Göttingen | ||||||||||||
Institute & Einrichtungen: | Institut für Aeroelastik > Lastanalyse und Entwurf Institut für Aeroelastik > Aeroelastische Simulation | ||||||||||||
Hinterlegt von: | Streitenberger, Kilian | ||||||||||||
Hinterlegt am: | 06 Sep 2024 08:37 | ||||||||||||
Letzte Änderung: | 06 Sep 2024 08:37 |
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