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RISSimple Contact Stiffness Model Validation for Tie Bolt Rotor Design With Butt Joints and Pilot Fits
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Tie bolt rotors for centrifugal compressors comprise multiple shaft components that are held together by a single tie bolt. The axial connections of these rotors—including butt joints, Hirth couplings, and Curvic ...
A Rotordynamic, Thermal, and Thrust Load Performance Gas Bearing Test Rig and Test Results for Tilting Pad Journal Bearings and Spiral Groove Thrust Bearings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A high-speed gas bearing test rig was developed to characterize rotordynamic, thermal, and thrust load performance of gas bearings being developed for an oil-free turboexpander. The radial bearings (RBs) tested in this ...
Development of Large-Diameter Hybrid Film-Riding Seals for Supercritical Carbon Dioxide Turbines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Compared to traditional labyrinth seals, large-diameter (about 24 in or 609.6 mm) film-riding face seals are worth 0.55–0.65% points efficiency for utility-scale supercritical carbon dioxide (sCO2) turbines. Conventional ...
Impact of Bearing Clearance on Measured Stiffness and Damping Coefficients and Thermal Performance of a High-Stiffness Generation 3 Foil Journal Bearing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: High-speed foil bearings are currently used in increasingly demanding, high performance applications. The application under consideration is a 120 krpm natural gas turboexpander-compressor, which requires 38 mm (1.5 in.) ...