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Modelling the Rubbing Process in Labyrinth Seals

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

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.

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Verlagsausgabe §
DOI: 10.5445/IR/1000079151
Veröffentlicht am 06.03.2018
Seitenaufrufe: 110
seit 02.05.2018
Downloads: 73
seit 08.03.2018
Zugehörige Institution(en) am KIT Institut für Thermische Strömungsmaschinen (ITS)
Publikationstyp Proceedingsbeitrag
Jahr 2018
Sprache Englisch
Identifikator urn:nbn:de:swb:90-791510
KITopen-ID: 1000079151
Erschienen in Proceedings of GPPS Forum 18, Zurich, CH, January 10-12, 2018
Seiten GPPS-2018-0038/ 1-9
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