Rotordynamic coefficients for labyrinth seals calculated by means of a finite difference technique
- Author:
- Nordmann, R.
- Published:
- Feb 1, 1989.
- Physical Description:
- 1 electronic document
- Additional Creators:
- Weiser, P.
Online Version
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- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access - Summary:
- The compressible, turbulent, time dependent and three dimensional flow in a labyrinth seal can be described by the Navier-Stokes equations in conjunction with a turbulence model. Additionally, equations for mass and energy conservation and an equation of state are required. To solve these equations, a perturbation analysis is performed yielding zeroth order equations for centric shaft position and first order equations describing the flow field for small motions around the seal center. For numerical solution a finite difference method is applied to the zeroth and first order equations resulting in leakage and dynamic seal coefficients respectively.
- Other Subject(s):
- Collection:
- NASA Technical Reports Server (NTRS) Collection.
- Note:
- Document ID: 19890013529.
Accession ID: 89N22900.
NASA, Lewis Research Center, Rotordynamic Instability Problems in High-Performance Turbomachinery, 1988; p 161-175. - Terms of Use and Reproduction:
- No Copyright.
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