Weiss, Armin und Geisler, Reinhard und Müller, Martin M. und Klein, Christian und Henne, Ulrich und Braukmann, Johannes N. und Letzgus, Johannes (2022) Dynamic-stall measurements using time-resolved pressure-sensitive paint on double-swept rotor blades. Experiments in Fluids, 63 (1), Seiten 1-18. Springer Nature. doi: 10.1007/s00348-021-03366-6. ISSN 0723-4864.
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Offizielle URL: https://doi.org/10.1007/s00348-021-03366-6
Kurzfassung
The study presents an optimized pressure-sensitive paint (PSP) measurement system that was applied to investigate unsteady surface pressures on recently developed double-swept rotor blades in the rotor test facility at the German Aerospace Center (DLR) in Göttingen. The measurement system featured an improved version of a double-shutter camera that was designed to reduce image blur in PSP measurements on fast rotating blades. It also comprised DLR's PSP sensor, developed to capture transient flow phenomena (iPSP). Unsteady surface pressures were acquired across the outer 65% of the rotor blade with iPSP and at several radial blade sections by fast-response pressure transducers at blade-tip Mach and Reynolds numbers of M_{tip} = 0.282 - 0.285 and Re_{tip}= 5.84 - 5.95 * 10^5. The unique experimental setup allowed for scanning surface pressures across the entire pitch cycle at a phase resolution of 0.225 deg azimuth for different collective and cyclic-pitch settings. Experimental results of both investigated cyclic-pitch settings are compared in detail to a delayed detached eddy simulation using the flow solver FLOWer and to flow visualizations from unsteady Reynolds-averaged Navier Stokes (URANS) computations with DLR's TAU code. The findings reveal a detailed and yet unseen insight into the pressure footprint of double-swept rotor blades undergoing dynamic stall and allow for deducing "stall maps", where confined areas of stalled flow on the blade are identifiable as a function of the pitch phase.
elib-URL des Eintrags: | https://elib.dlr.de/146856/ | ||||||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||||||
Zusätzliche Informationen: | Artikelnummer 15 | ||||||||||||||||||||||||||||||||
Titel: | Dynamic-stall measurements using time-resolved pressure-sensitive paint on double-swept rotor blades | ||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | Januar 2022 | ||||||||||||||||||||||||||||||||
Erschienen in: | Experiments in Fluids | ||||||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||||||
Band: | 63 | ||||||||||||||||||||||||||||||||
DOI: | 10.1007/s00348-021-03366-6 | ||||||||||||||||||||||||||||||||
Seitenbereich: | Seiten 1-18 | ||||||||||||||||||||||||||||||||
Herausgeber: |
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Verlag: | Springer Nature | ||||||||||||||||||||||||||||||||
ISSN: | 0723-4864 | ||||||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||||||
Stichwörter: | unsteady pressure sensitive paint, dynamic stall, rotor aerodynamics, optical measurement techniques | ||||||||||||||||||||||||||||||||
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 - Virtueller Hubschrauber und Validierung | ||||||||||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Über- und Hyperschalltechnologien, KP Institut für Aerodynamik und Strömungstechnik > Experimentelle Verfahren, GO Institut für Aerodynamik und Strömungstechnik > Hubschrauber, GO Institut für Aeroelastik > Aeroelastische Experimente | ||||||||||||||||||||||||||||||||
Hinterlegt von: | Weiss, Armin | ||||||||||||||||||||||||||||||||
Hinterlegt am: | 10 Jan 2022 13:06 | ||||||||||||||||||||||||||||||||
Letzte Änderung: | 12 Mai 2023 13:06 |
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