This brief note describes a method for calculating the eigenfrequencies of a rotating acoustic air column inside labyrinth seals in turbomachinery. The method is applied to nonrotating air columns as well as to rotating air columns considering a body fixed and a spatial fixed coordinate system.
Calculating the Eigenfrequency of Rotating Acoustic Annulus Inside Labyrinth Seals of Turbomachines
Contributed by the Stuctures and Dynamics Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received by the S&D Division October 9, 2002; final revision received November 20, 2003. Associate Editor: N. Arakere.
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Hurlebaus, S., and Gaul, L. (February 9, 2005). "Calculating the Eigenfrequency of Rotating Acoustic Annulus Inside Labyrinth Seals of Turbomachines ." ASME. J. Eng. Gas Turbines Power. January 2005; 127(1): 178–181. https://doi.org/10.1115/1.1787501
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