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Modelling the Rubbing Process in Labyrinth Seals

Munz, Oliver; Schwitzke, Corina; Bauer, Hans-Jörg; Welzenbach, Sarah; Fischer, Tim; Kyzy, Sonun Ulan

Abstract (englisch):
To understand the complex rubbing process between labyrinth seal fins and honeycomb liners, experimental investigations are considered for an idealized contact between a metal sheet, representing the honeycomb part, and a rotating seal fin. Modifications of our test rig allow to measure the resulting rub forces, temperatures and wear of the seal fin and metal sheet for a wide range of circumferential velocities and incursion rates. The rotor material is Inconel 718, and the metal sheets consist of the nickel-based super-alloys Hastelloy X and Haynes 214. To define appropriate boundary conditions for the experiment, a one-dimensional numerical model is introduced. It takes into account kinematic contact conditions, friction, heat conduction, and abrasive and plastic wear. The use of analytical relations and parallel computing enables a time-efficient computation of multiple scenarios. Therefore, it is possible to identify the effect of variations and uncertainties of the input parameters on the results and derive an optimized test plan.

Zugehörige Institution(en) am KIT Institut für Thermische Strömungsmaschinen (ITS)
Publikationstyp Proceedingsbeitrag
Jahr 2018
Sprache Englisch
Identifikator URN: urn:nbn:de:swb:90-791510
KITopen ID: 1000079151
Erschienen in Zurich, Forum 18, Zürich, Switzerland, 10 - 12th January 2018
Verlag GPPS, Zug
Seiten GPPS-2018-0038/ 1-9
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