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Now showing items 1-10 of 16
Notes 10. A thermohydrodynamic bulk-flow model for fluid film bearings
(2009)
The complete set of bulk-flow equations for the analysis of turbulent flow fluid film bearings. Importance of thermal effects in process fluid applications. A CFD method for solution of the bulk-flow equations.
Notes 12. (a) Annular pressure (damper) seals, and (b) Hydrostatic journal bearings
(2009)
The mechanism of centering stiffness in seals. Force coefficients for short-length pressure seals. Design of annular seals: swirl brakes, impact on rotordynamics. Hydrostatic bearings in modern applications. The principle ...
Notes 04. Static load performance of plain journal bearings
(2010)
The long and short bearing models. Pressure field and fluid film forces on short length journal bearings. Equilibrium condition, load capacity and the Sommerfeld number.
Notes 00. Introduction to Hydrodynamic Lubrication
(2010)
The basic laws of friction. Fluid Film Bearings. Basic Operational Principles. Hydrodynamic and Hydrostatic Bearing Configurations. Example of rotordynamic study. Performance objectives.
Notes 03. Kinematics of motion in cylindrical journal bearings
(2009)
Reynolds equation for cylindrical journal bearings. Kinematics of motion and film thickness. Distinction between fixed and rotating coordinates. The pure squeeze velocity vector. Examples of journal motion.
Notes 15. Gas Bearings for oil-free MTM
(2010)
Appraisal of the art. Technical Presentation to IFToMM Rotordynamics Conference, Seoul, Korea (Sept, 2010)
Notes 08. Turbulence flow in thin film bearings : Characteristics and Modeling
(2009)
The nature of turbulence. Turbulence equations in thin film flows. Turbulence flow models. The bulk-flow model of turbulence, Hirs’ and Moody’s friction factors.
Notes 01. The fundamental assumptions and equations of lubrication theory
(2009)
The fundamental assumption in Lubrication Theory. Derivation of thin film flow equations from Navier-Stokes equations. Importance of fluid inertia effects in thin film flows. Some fluid physical properties
Notes 05. Dynamics of a simple rotor-fluid film bearing system
(2009)
Equations of motion of a rigid rotor. The concept of force coefficients. Derivation of stiffness and damping coefficients for the short bearing. Stability analysis and the effect of cross-coupled stiffness. Effect of rotor ...
Notes 09. Fluid inertia and turbulence in fluid film bearings
(2009)
When fluid inertia effects are important. Bulk-flow model for inertial flows. Turbulence and inertia in short length journal bearings and open end dampers.