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Calculating rotordynamic coefficients of seals by finite-difference techniquesFor modelling the turbulent flow in a seal the Navier-Stokes equations in connection with a turbulence (kappa-epsilon) model are solved by a finite-difference method. A motion of the shaft round the centered position is assumed. After calculating the corresponding flow field and the pressure distribution, the rotor-dynamic coefficients of the seal can be determined. These coefficients are compared with results obtained by using the bulk flow theory of Childs and with experimental results.
Document ID
19870012771
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dietzen, F. J. (Kaiserslautern Univ.)
Nordmann, R. (Kaiserslautern Univ.)
Date Acquired
September 5, 2013
Publication Date
January 1, 1987
Publication Information
Publication: NASA. Lewis Research Center Rotordynamic Instability Problems in High-Performance Turbomachinery, 1986
Subject Category
Mechanical Engineering
Accession Number
87N22204
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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