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INVESTIGATION OF UNSTEADY COMPRESSOR FLOW STRUCTURE WITH TIP INJECTION USING PARTICLE IMAGE VELOCIMETRY

Matzgeller, Roland und Voges, Melanie und Schroll, Michael (2011) INVESTIGATION OF UNSTEADY COMPRESSOR FLOW STRUCTURE WITH TIP INJECTION USING PARTICLE IMAGE VELOCIMETRY. In: Proceedings of ASME Turbo Expo 2011. ASME Turbo Expo 2011: Power for Land, Sea and Air, 6.-10. Juni 2011, Vancouver, Canada.

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Kurzfassung

Fluid injection at the tip of highly loaded compressor rotors is known to be very effective in suppressing the onset of rotating stall and eventually compressor instability. To understand the effects of tip injection, the flow field at the tip region of a transonic compressor rotor with and without fluid injection was investigated in this paper. Using results acquired by phase-locked PIV measurements as well as the static pressure field obtained by fast response pressure transducers, the unsteady interaction between the injection jet and the rotor could be described thoroughly. Both, an influence of the rotor’s flow field on the jet as well of the jet on the rotor was clearly visible. Since unsteady inflow conditions to the front rotor in the relative frame of reference were imposed by the injection jets, the rotor’s unsteady response was investigated by inspection of the position of the tip leakage vortex trajectory. It could be shown that due to a short time for the flow to adapt at the rotor’s leading edge, its position didn’t change distinctly. Because a significantly longer time was needed for the overall passage flow to adapt, it was concluded that this causes the beneficial effect of tip injection.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:INVESTIGATION OF UNSTEADY COMPRESSOR FLOW STRUCTURE WITH TIP INJECTION USING PARTICLE IMAGE VELOCIMETRY
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Matzgeller, RolandMTU Aero Engines GmbH
Voges, Melaniemelanie.voges@dlr.de
Schroll, Michaelmichael.schroll@dlr.de
Datum:Juni 2011
Erschienen in:Proceedings of ASME Turbo Expo 2011
Referierte Publikation:Ja
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:compressor, tip injection, PIV, unsteady
Veranstaltungstitel:ASME Turbo Expo 2011: Power for Land, Sea and Air
Veranstaltungsort:Vancouver, Canada
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:6.-10. Juni 2011
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Antriebe
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L ER - Antriebsforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Virtuelles Triebwerk und Validierungsmethoden
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Antriebstechnik > Triebwerksmesstechnik
Hinterlegt von: Melanie Voges
Hinterlegt am:19 Jan 2012 11:07
Letzte Änderung:19 Jan 2012 11:07

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