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- Title
Numerical analysis of a vertical rotor rub system partially immersed in inviscid incompressible fluid.
- Authors
Filipeson Sozinando, Desejo; Tchomeni, Bernard Xavier; Alugongo, Alfayo Anyika
- Abstract
Two-dimensional linearized Navier-Stokes equations have been used to model the inviscid fluid forces acting on a vertical rotor-cylindrical stator system partially immersed in an inviscid incompressible fluid. The response of the fluid-stator-system subjected to subsequent fault feature extraction. The influences of parameters of the fluid system, among them, fluid density, and mass ratio on the unstable contact zones are analyzed. It is shown that for an effective prediction of rub-impact in a submerged rotor system, the influence of the fluid mass on the stability of the system is an important dynamic factor. It is revealed, that the fluid forces increase the amplitude of vibration, while the frequency of oscillation is reduced, phenomena that stabilise the isotropic vertical rotor-stator system.
- Subjects
INVISCID flow; NUMERICAL analysis; FREQUENCIES of oscillating systems; FREE convection; NAVIER-Stokes equations; FLUIDS; FEATURE extraction
- Publication
Vibroengineering Procedia, 2019, Vol 27, p61
- ISSN
2345-0533
- Publication type
Article
- DOI
10.21595/vp.2019.20893