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A 3-dimensional finite-difference method for calculating the dynamic coefficients of sealsA method to calculate the dynamic coefficients of seals with arbitrary geometry is presented. The Navier-Stokes equations are used in conjunction with the k-e turbulence model to describe the turbulent flow. These equations are solved by a full 3-dimensional finite-difference procedure instead of the normally used perturbation analysis. The time dependence of the equations is introduced by working with a coordinate system rotating with the precession frequency of the shaft. The results of this theory are compared with coefficients calculated by a perturbation analysis and with experimental results.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Dietzen, F. J.
(Kaiserslautern Univ.)
Nordmann, R.
(Kaiserslautern Univ.)
Date Acquired
September 5, 2013
Publication Date
February 1, 1989
Publication Information
Publication: NASA, Lewis Research Center, Rotordynamic Instability Problems in High-Performance Turbomachinery, 1988
Subject Category
Mechanical Engineering
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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