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Investigation of Blade Tip Interaction with Casing Treatment in a Transonic Compressor - Part 2: Numerical Results

Schnell, Rainer und Voges, Melanie und Mönig, Reinhard und Müller, Martin W. und Zscherp, Carsten (2008) Investigation of Blade Tip Interaction with Casing Treatment in a Transonic Compressor - Part 2: Numerical Results. In: ASME-Paper, GT2008-50212. ASME Turbo Expo 2008, 2008-06-09 - 2008-06-13, Berlin, Germany.

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A single-stage transonic axial compressor was equipped with a casing treatment, consisting of 3.5 axial slots per rotor pitch in order to investigate its influence on stall margin characteristics as well as on the rotor near tip flowfield both numerically and experimentally. Contrary to most other studies a generic Casing Treatment was designed to provide optimal optical access in the immediate vicinity of the CT, rather than for maximum benefit in terms of stall margin extension. The second part of this two-part paper deals with the numerical developments, and their validation, carried out in order to efficiently perform time-accurate casing-treatment simulations. The numerical developments focus on the extension of an existing coupling algorithm in order to carry out unsteady calculations with any exterior geometry coupled to the main flow passage (in this case a single slot) having an arbitrary pitch. This extension is done by incorporating frequency domain, phase-lagged boundary conditions into this coupling procedure. Whereas the phaselag approach itself is well established and validated for standard rotor-stator calculations, its application to casing treatment simulations is new. Its capabilities and validation will be demonstrated on the given compressor configuration, making extensive use of the detailed PIV flowfield measurements near the rotor tip. Instantaneous data at all measurement planes will be compared for different rotor positions with respect to the stationary slots in order to evaluate the time-dependent interaction between the rotor and the casing treatment.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:Investigation of Blade Tip Interaction with Casing Treatment in a Transonic Compressor - Part 2: Numerical Results
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iD
Müller, Martin W.Technische Universität DarmstadtNICHT SPEZIFIZIERT
Zscherp, CarstenMTU Aero Engines GmbHNICHT SPEZIFIZIERT
Datum:9 Juni 2008
Erschienen in:ASME-Paper, GT2008-50212
Referierte Publikation:Ja
In Open Access:Nein
In ISI Web of Science:Nein
Stichwörter:TRACE, CFD, phase-lag, casing treatment, compressor, transonic, validation
Veranstaltungstitel:ASME Turbo Expo 2008
Veranstaltungsort:Berlin, Germany
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2008-06-09 - 2008-06-13
Veranstalter :IGTI
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Antriebe (alt)
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L ER - Antriebsforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Virtuelles Triebwerk und Validierungsmethoden (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Antriebstechnik
Institut für Antriebstechnik > Triebwerksmesstechnik
Institut für Antriebstechnik > Fan- und Verdichter
Hinterlegt von: Voges, Melanie
Hinterlegt am:28 Jul 2008
Letzte Änderung:12 Dez 2013 20:31

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