... applications. The flow model is based on an unstructured, implicit Reynolds-averaged Navier–Stokes solver. The solver is coupled to a modal model for the structure obtained from a standard structural finite element code. During the aeroelasticity computations, the aerodynamic grid is moved at each time step...

...—but not limited to—aerodynamic forces, bristle tip∕rotor contact force, and interbristle interactions. The latter interactions are associated with contact forces that are exerted onto a bristle by adjacent fibers, as both forces and displacements are transmitted throughout the fibrous network. Such interbristle...

... bristles that readily undergo lateral deformation arising from aerodynamic loads as well as loads imparted by the rotor surface. Thus, during operation, filament tips remain in contact with the rotor surface, which, in turn, inhibits leakage between successive stages of the turbine, and increases engine...

... measurement aerodynamics machine bearings turbines damping lubrication cavitation Squeeze film dampers (SFDs) provide force isolation and energy dissipation in high-speed turbomachinery. SFD design, however, remains empirical at best since predictive models derived from Classical Lubrication do...

... with a spring or metal bellows and O-ring. seals (stoppers) stators rotors aerodynamics flow simulation step response frequency response mechanical engineering computing computational fluid dynamics 20 July 2001 27 December 2001 24 09 2002 Contributed by the Tribology...

.... Operating seal gaps were determined from the actual time histories of the seal motion under the effect of the aerodynamic and the restoring spring forces. Both stable and unstable cases were considered. It was concluded that, in principle, the existing numerical tools could be used for the flow...

... by the Tribology Division February 25, 2000; revised manuscript received June 30, 2000. Paper No. 2000-TRIB-27. Associate Editor: J. Fre^ne. 25 February 2000 30 June 2000 machine bearings shear flow mechanical contact cavitation aerodynamics tribology lubrication bubbles interface...

... mechanics aerodynamics lubrication finite element analysis flow modelling tribology A considerable body of work has been published concerning the dynamics of mechanical face seals 1 2 3 . Most of these works dealt with incompressible fluids. However, compressibility and pressure...