Interaction of the Rigid Journal with Newtonian Fluid

conference paper

English

This paper deals with the problem of identification of added effects of incompressible Newtonian fluid that impacts on the rigid journal performing translational motion. It considers two degrees of freedom. The axial motion of the rigid journal was neglected. It assumes small oscillations and linear model. The task was solved for two geometrical configurations of the computational domain. In the first variant of geometry, there is no flow between the bases of journal and stator. The second variant of geometry also allows liquid to flow in space between the bases of journal and stator. The introduction describes the mathematical model for the identification of added mass, damping and stiffness matrices. On the basis of the mathematical model and computational modeling of velocity and pressure fields using CFD, the force components are determined. From there, the mentioned matrices are determined depending on the eccentricity of the rigid journal.

CFD modeling, added effects, Newtonian fluid

HAVLÁSEK, M.; POCHYLÝ, F.

25. 9. 2017

978-0-7354-1572-0

36TH MEETING OF DEPARTMENTS OF FLUID MECHANICS AND THERMODYNAMICS

020009-1

020009-10

10