Experimental investigations of rotor whirl excitation forces induced by labyrinth seal flow

C. Rajakumar, F. Sisto

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

The labyrinth seal flow-induced forces have been identified as one of the causes of rotordynamic instabilities in the recent literature. The eccentricity of the rotor center relative to the seal center introduces asymmetry in the seal clearance flow causing circumferential variation of the pressure in seal cavities. Experimentally-measured seal cavity pressure distributions for different rotor eccentricities are presented in this paper. Resultant seal forces obtained by integrating the circumferential pressures over the rotor surface are presented as a function of rotor eccentricity. The experimental results are also used to validate the analytically predicted seal pressure distributions and forces.

Original languageEnglish
Pages (from-to)515-522
Number of pages8
JournalJournal of Vibration and Acoustics, Transactions of the ASME
Volume112
Issue number4
DOIs
StatePublished - Oct 1990

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