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A comparison of experimental and theoretical results for rotordynamic coefficients of four annular gas sealsThe test facility and initial test program developed to experimentally measure the fluid forces induced by annular gas seals is described. A comparison of theoretically predicted and experimentally obtained data for smooth and honeycomb seals is provided. And a comparison of experimental data from the tests of three smooth-rotor/smooth-stator seals is provided. The leakage of the working fluid through the seal, the pressure gradient along the seal length, entrance pressure-loss data, and rotordynamic coefficients provide a basis for comparison. A short discussion on seal theory is included, and various rotordynamic coefficient identification schemes are described.
Document ID
19850024019
Document Type
Contractor Report (CR)
Authors
Childs, D. W. (Texas A&M Univ. College Station, TX, United States)
Nelson, C. C. (Texas A&M Univ. College Station, TX, United States)
Elrod, D. (Texas A&M Univ. College Station, TX, United States)
Nicks, C. (Texas A&M Univ. College Station, TX, United States)
Date Acquired
September 5, 2013
Publication Date
July 1, 1985
Subject Category
MECHANICAL ENGINEERING
Report/Patent Number
TRC-SEALS-5-85
NASA-CR-176086
NAS 1.26:176086
Funding Number(s)
CONTRACT_GRANT: NAS8-33716
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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