This paper presents results from an extensive experimental study on the rubbing behavior of labyrinth seal fins (SFs) and a honeycomb liner. The objective of the present work is to improve the understanding of the rub behavior of labyrinth seals by quantifying the effects and interactions of sliding speed, incursion rate, seal geometry, and SF rub position on the honeycomb liner. In order to reduce the complexity of the friction system studied, this work focuses on the contact between a single SF and a single metal foil. The metal foil is positioned in parallel to the SF to represent contact between the SF and the honeycomb double foil section. A special test rig was set up enabling the radial incursion of a metal foil into a rotating labyrinth SF at a defined incursion rate of up to 0.65 mm/s and friction velocities up to 165 m/s. Contact forces, friction temperatures, and wear were measured during or after the rub event. In total, 88 rub tests including several repetitions of each rub scenario have been conducted to obtain a solid data base. The results show that rub forces are mainly a function of the rub parameters incursion rate and friction velocity. Overall, the results demonstrate a strong interaction between contact forces, friction temperature, and wear behavior of the rub system. The presented tests confirm basic qualitative observations regarding blade rubbing provided in literature.
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June 2016
Research-Article
Experimental Study on the Friction Contact Between a Labyrinth Seal Fin and a Honeycomb Stator
Tim Pychynski,
Tim Pychynski
Institut für Thermische Strömungsmaschinen (ITS),
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: tim.pychynski@kit.edu
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: tim.pychynski@kit.edu
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Corina Höfler,
Corina Höfler
Institut für Thermische Strömungsmaschinen (ITS),
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: corina.hoefler@kit.edu
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: corina.hoefler@kit.edu
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Hans-Jörg Bauer
Hans-Jörg Bauer
Institut für Thermische Strömungsmaschinen (ITS),
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: hans-joerg.bauer@kit.edu
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: hans-joerg.bauer@kit.edu
Search for other works by this author on:
Tim Pychynski
Institut für Thermische Strömungsmaschinen (ITS),
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: tim.pychynski@kit.edu
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: tim.pychynski@kit.edu
Corina Höfler
Institut für Thermische Strömungsmaschinen (ITS),
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: corina.hoefler@kit.edu
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: corina.hoefler@kit.edu
Hans-Jörg Bauer
Institut für Thermische Strömungsmaschinen (ITS),
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: hans-joerg.bauer@kit.edu
Karlsruher Institut für Technologie (KIT),
Kaiserstr. 12,
Karlsruhe 76131, Germany
e-mail: hans-joerg.bauer@kit.edu
Contributed by the Structures and Dynamics Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 30, 2015; final manuscript received October 5, 2015; published online November 17, 2015. Editor: David Wisler.
J. Eng. Gas Turbines Power. Jun 2016, 138(6): 062501 (9 pages)
Published Online: November 17, 2015
Article history
Received:
July 30, 2015
Revised:
October 5, 2015
Citation
Pychynski, T., Höfler, C., and Bauer, H. (November 17, 2015). "Experimental Study on the Friction Contact Between a Labyrinth Seal Fin and a Honeycomb Stator." ASME. J. Eng. Gas Turbines Power. June 2016; 138(6): 062501. https://doi.org/10.1115/1.4031791
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