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Experimental Investigation on the Rubbing Process of Labyrinth Seals Considering the Material Combination

Hühn, Lisa 1; Munz, Oliver 1; Schwitzke, Corina 1; Bauer, Hans-Jörg 1
1 Institut für Thermische Strömungsmaschinen (ITS), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

Labyrinth seals are used to prevent and control the mass flowrate between rotating components. Due to thermally and mechanically induced expansions during operation and transient flight maneuvers, a contact, the so-called rubbing process, between rotor and stator cannot be excluded. A large amount of rubbing process data concerning numerical and experimental investigations is available in public literature as well as at the Institute of Thermal Turbomachinery (ITS). The investigations were carried out for different operating conditions, material combinations, and component geometries. In combination with the experiments presented in this paper, the effects of the different variables on load due to rubbing are compared and discussed with the focus lying on the material combination. The influence of the material on the loads can be identified as detailed as never before. For example, the contact forces in the current experiments are higher due to a higher temperature resistance of Young’s modulus. The analysis will also be based on the rubbing of turbine blades. Design guidelines are derived for labyrinth seals with improved properties regarding tolerance of rub events. ... mehr

DOI: 10.1115/1.4051166
Web of Science
Zitationen: 1
Zitationen: 1
Zugehörige Institution(en) am KIT Institut für Thermische Strömungsmaschinen (ITS)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 11.2021
Sprache Englisch
Identifikator ISSN: 0889-504X, 1528-8900
KITopen-ID: 1000138651
Erschienen in Journal of turbomachinery
Verlag The American Society of Mechanical Engineers (ASME)
Band 143
Heft 11
Seiten Art.Nr. 111006
Vorab online veröffentlicht am 15.06.2021
Nachgewiesen in Web of Science
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