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http://dx.doi.org/10.5293/KFMA.2002.5.4.040

Characteristics of Leakage and Rotordynamic Coefficients for Annular Seal with Honeycomb/Smooth Land  

Ha, Tae-Woong (경원대학교 건축설비 기계공학부)
Publication Information
The KSFM Journal of Fluid Machinery / v.5, no.4, 2002 , pp. 40-46 More about this Journal
Abstract
An honeycomb/smooth land seal alternating with the honeycomb seal is suggested for structural enhancement in high pressure turbomachinery. Governing equations are derived for an honeycomb/smooth land annular gas seal based on Hirs' lubrication theory and Moody's friction factor model for smooth land and empirical friction factor model for honeycomb land. By using a perturbation analysis and a numerical integration method, the governing equations are solved to yield leakage and the corresponding dynamic coefficients developed by the seal. Theoretical results show that the leakage increases and rotordynamic stability decreases as increasing the length of smooth land part in the honeycomb/smooth land seal.
Keywords
Honeycomb Seal; Smooth Seal; Leakage; Rotordynamic Coefficient; Compressor;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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[ Hirs, G. G. ] / ASME Journal of Lubrication Technology
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[ Ha, T. W.;Childs, D. W. ] / ASME Journal of Tribology   DOI