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Evaluation of Rotordynamic Coefficients of Look-through Labyrinths by Means of a Three Volume Bulk Flow ModelTo describe the compressible, turbulent flow in a labyrinth seal, a three volume bulk flow model is presented. The conservation equations for mass, momentum, and energy are established in every control volume. A perturbation analysis is performed, yielding zeroth order equations for centric rotor position and first order equations describing the flow field for small rotor motions around the seal center. The equations are integrated numerically. From perturbation pressure, the forces on the shaft and the dynamic coefficients are calculated.
Document ID
19920005138
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Nordmann, R.
(Kaiserslautern Univ.)
Weiser, P.
(Kaiserslautern Univ.)
Date Acquired
September 6, 2013
Publication Date
October 1, 1991
Publication Information
Publication: NASA. Lewis Research Center, Rotordynamic Instability Problems in High-Performance Turbomachinery, 1990
Subject Category
Mechanical Engineering
Accession Number
92N14356
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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