Turbomachinery and Pump Symposia

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http://hdl.handle.net/1969.1/158832

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Browsing Turbomachinery and Pump Symposia by Author "Abramovitz, Stanley"

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    Fluid Film Bearing Design Considerations
    (Texas A&M University. Gas Turbine Laboratories, 1972) Abramovitz, Stanley; Turbomachinery Symposium (1st : 1972)
    The basic and practical design concepts of fluid film bearings as applied to turbomachinery will be discussed. The discussion will cover specific applications that are representative of a wide range of conditions that can be expected. This will include the types of bearings that are most indicated for the specific machinery and their operating conditions. Although the basic theoretical criteria will be included, the emphasis will be on "hardware" examples that describe tile bearing design for the particular job, speed, and type of fluid lubricant and temperature will basically categorize the design applications. Applications will cover speeds ranging as high as 100.000 rpm. The use of lubricants that are the process fluids result in simplicity of over-all design and are, in many cases, quite feasible. The fluid lubricants covered will be, the conventional oils, the low viscosity liquids such as water, Mercury, etc., and gases such as air. The discussion will give the designer a feel for the type of bearing most applicable, and information to ballpark the size. Additional influencing factors such as alignment, and the types and effect of shaft and bearing instabilities will be discussed.
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    Fluid Film Bearings - Fundamentals And Design Criteria And Pitfalls
    (Texas A&M University. Gas Turbine Laboratories, 1977) Abramovitz, Stanley; Turbomachinery Symposium (6th : 1977)
    The presentation will cover fluid film bearing fundamental theory and design criteria. Since the subject is extensive, the design portion will be restricted to hydrodynamic (self-acting) bearing mode using liquid lubricants. This is the condition found in the majority of turbomachinery in the field, and is of most general interest. The four basic fluid film bearing modes and principles of bearing operation will be described. The various types of thrust and journal bearings will be identified and discussed as to their operation and use. The design criteria will cover such subjects as load capacity, power loss, temperature, speed, turbulence, misalignment, and vibrations. This will include the most recent available information for obtaining maximum bearing performance. Many references will be included for more detailed study. The concluding portion will deal with the pitfalls and problems in applying the bearing design principles and types, with actual field examples. This will cover operating conditions, bearing type selection, and physical design and installation, what must be done or avoided to translate a promising bearing application into a practical and successful reality.