EVALUATION OF SEALS FOR HIGH-PERFORMANCE CRYOGENIC TURBOMACHINES.

R. C. Hendricks; L. T. Tam; M. J. Braun; B. L. Vlcek

EVALUATION OF SEALS FOR HIGH-PERFORMANCE CRYOGENIC TURBOMACHINES.

R. C. Hendricks, L. T. Tam, M. J. Braun, B. L. Vlcek

Mechanical Engineering

NASA Glenn Research Center

Research output: Contribution to book or proceeding › Chapter › peer-review

Abstract

An approach to computing flow and dynamic characteristics for seals or bearings is discussed. The local average velocity was strongly influenced by inlet and exit effects and fluid injection, which in turn drove zones of secondary flow. For the restricted three-dimensional model considered, the integral averaged results were in reasonable agreement with selected data. Unidirectional pressure measurements alone were insufficient to define such flow variations. However, for seal and bearing leakage correlations the principles of corresponding states were found to be useful. Also discussed are three phenomena encountered during testing of three eccentric nonrotating seal configurations for the Space Shuttle Main Engine (SSME) Program.

Original language	English
Title of host publication	NASA Technical Memorandum
State	Published - 1987

Cite this

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title = "EVALUATION OF SEALS FOR HIGH-PERFORMANCE CRYOGENIC TURBOMACHINES.",

abstract = "An approach to computing flow and dynamic characteristics for seals or bearings is discussed. The local average velocity was strongly influenced by inlet and exit effects and fluid injection, which in turn drove zones of secondary flow. For the restricted three-dimensional model considered, the integral averaged results were in reasonable agreement with selected data. Unidirectional pressure measurements alone were insufficient to define such flow variations. However, for seal and bearing leakage correlations the principles of corresponding states were found to be useful. Also discussed are three phenomena encountered during testing of three eccentric nonrotating seal configurations for the Space Shuttle Main Engine (SSME) Program.",

author = "Hendricks, {R. C.} and Tam, {L. T.} and Braun, {M. J.} and Vlcek, {B. L.}",

year = "1987",

language = "English",

booktitle = "NASA Technical Memorandum",

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AU - Hendricks, R. C.

AU - Tam, L. T.

AU - Braun, M. J.

AU - Vlcek, B. L.

PY - 1987

Y1 - 1987

N2 - An approach to computing flow and dynamic characteristics for seals or bearings is discussed. The local average velocity was strongly influenced by inlet and exit effects and fluid injection, which in turn drove zones of secondary flow. For the restricted three-dimensional model considered, the integral averaged results were in reasonable agreement with selected data. Unidirectional pressure measurements alone were insufficient to define such flow variations. However, for seal and bearing leakage correlations the principles of corresponding states were found to be useful. Also discussed are three phenomena encountered during testing of three eccentric nonrotating seal configurations for the Space Shuttle Main Engine (SSME) Program.

AB - An approach to computing flow and dynamic characteristics for seals or bearings is discussed. The local average velocity was strongly influenced by inlet and exit effects and fluid injection, which in turn drove zones of secondary flow. For the restricted three-dimensional model considered, the integral averaged results were in reasonable agreement with selected data. Unidirectional pressure measurements alone were insufficient to define such flow variations. However, for seal and bearing leakage correlations the principles of corresponding states were found to be useful. Also discussed are three phenomena encountered during testing of three eccentric nonrotating seal configurations for the Space Shuttle Main Engine (SSME) Program.

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M3 - Chapter

AN - SCOPUS:0023252580

BT - NASA Technical Memorandum

ER -

EVALUATION OF SEALS FOR HIGH-PERFORMANCE CRYOGENIC TURBOMACHINES.

Abstract

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