The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
권호 표지
DOI QR코드

DOI QR Code

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

Honeycomb/Smooth 표면을 갖는 비접촉 환상 실의 특성해석

  • 하태웅 (경원대학교 건축설비 기계공학부)
  • Published : 2002.12.01
Download PDF
⟨ Previous Next ⟩

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

References

  1. ASME Journal of Engineering for Gas Turbines and Power v.107 no.1 Vibration Characteristics of the HPOTP (High-Pressure Oxygen Turbopump) of the SSME (Space Shuttle Main Engin) Childs, D. W.;Moyer, D. S. https://doi.org/10.1115/1.3239676
  2. ASME Journal of Tribology v.111 Annular Honeycomb Seals: Test Results for Leakage and Rotordynamic Coeffiecient; Comparisons to Labyrinth and Smooth Configurations Childs, D. W.;Elrod, D.;Hale, K. https://doi.org/10.1115/1.3261911
  3. Master thesis A Comparison of Experimental Results and Theoretical Predictions for the Rotordynamic and Leakage Characteristic of Short (L/D=1/6) Honeycomb and Smooth Annular Pressure seals Kleynhans, G. F.
  4. ASME Journal of Tribology v.116 Annular Honeycomb-Stator Turbulent Gas Seal Analysis Using a New Friction-Fator model Based on Flat Plate tests Ha, T. W.;Childs, D. W. https://doi.org/10.1115/1.2927233
  5. KSME Journal v.10 no.3 A Rotor-dynamic Analysis of an Annular Honeycomb Seal Using a Two-Control Volme Model Ha, T. W.;Childs, D. W.
  6. ASME Journal of Lubrication Technology A Bulk-Flow Theory for Turbulence in Lubricant Films Hirs, G. G.
  7. ASME Journal of Tribology v.114 Friction-Factor Data for Flat Plate Tests of Smooth and Honeycomb Surfaces Ha, T. W.;Childs, D. W. https://doi.org/10.1115/1.2920941
  8. ASME Journal of Tribology v.114 Friction-Fator Characteristics for Narrow Channels with Honeycomb Surfaces Ha, T. W.;Morrison, G. L.;Childs, D. W. https://doi.org/10.1115/1.2920940
  9. Proceedings of The Twenty-Second Turbomachinery Symposium The Use of Honeycomb seals In Stablilizing two Centrifugal Compressors Zeidan, F. Y.;Perez, R. X.;Stephensen, E. M.
  10. First Rarsons International Turbine Conference v.C37 Hassi R'Mel High Pressure Injection Project with Centrifugal Compressors Benaboud, N.
  11. ASME Journal of Tribology v.107 no.3 Rotordynamic Coefficients for Compressible Flow in Tapered Annular Seals Nelson, C. C. https://doi.org/10.1115/1.3261062

Cited by

  1. Analysis of Pre-Swirl Effect for Plain-Gas Seal Using CFD vol.16, pp.3, 2013, https://doi.org/10.5293/kfma.2013.16.3.026
  2. Numerical prediction of rotordynamic coefficients for an annular-type plain-gas seal using 3D CFD analysis vol.28, pp.2, 2014, https://doi.org/10.1007/s12206-011-0830-3