The Leakage Thru Straight and Slant Labyrinths and Honeycomb Seals

[+] Author and Article Information
C. A. Meyer, J. A. Lowrie

Development Engineering Department, Westinghouse Electric Corp., Lester, Pa.

J. Eng. Power 97(4), 495-501 (Oct 01, 1975) (7 pages) doi:10.1115/1.3446041 History: Received August 24, 1974; Online July 14, 2010


Leakage tests have been run over a wide range of pressure ratios and clearances for several types of seals. The results of tests of labyrinth seals show some important differences compared to previous theory. The discharge coefficient of a single seal has been found to jump from 0.62 to 0.78 when a second seal is added downstream. This effect depends on the clearance, pitch, and the pressure ratio across the seal. This phenomena has not been considered in past theories which assumed fixed seal discharge coefficients independent of the seal position and its pressure ratio in the Labyrinth. The test results are presented in a form which is easier to use than those based on the more complicated previous theory.

Copyright © 1975 by ASME
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