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Pressure Measurements and Flow Visualization in a Squeeze Film Damper Operating With a Bubbly Mixture
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Squeeze film dampers (SFDs) reduce rotor vibrations and control dynamic instabilities in turbomachinery. Depending on damper geometry and operating conditions, the kinematics of journal motion can ...
Flow Visualization and Forces From a Squeeze Film Damper Operating With Natural Air Entrainment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Measurements of dynamic film pressures and high-speed photographs of the flow field in an open-ended Squeeze Film Damper (SFD) operating with natural free air entrainment are presented for ...
Reduction of the Dynamic Load Capacity in a Squeeze Film Damper Operating With a Bubbly Lubricant
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Squeeze film dampers (SFDs) are effective means to reduce vibrations and to suppress instabilities in rotor-bearing systems. However, at operating conditions while traversing critical speeds with ...
Hydropower Optimization Via Sequential Quadratic Programming
Publisher: American Society of Civil Engineers
Abstract: Optimal allocation of powerplant releases during peak demand periods carries an economic advantage in the operation of hydropower systems interconnected to large electrical networks. This paper presents an alternative ...
Air Entrainment Versus Lubricant Vaporization in Squeeze Film Dampers: An Experimental Assessment of Their Fundamental Differences
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Squeeze film dampers (SFDs) provide structural isolation and energy dissipation in air-breathing engines and process gas compressors. However, SFDs are prone to develop a flow regime where the ...
Thermal Aging of Cast Stainless Steel, and Its Impact on Piping Integrity
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A series of experiments were conducted to characterize the effects of high temperature service (550–650°F or 288–343°C) on the mechanical properties of cast stainless steels. The material ...
On the Numerical Prediction of Finite Length Squeeze Film Dampers Performance With Free Air Entrainment
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Squeeze film dampers (SFDs) are commonly used in turbomachinery to dampen shaft vibrations in rotor-bearing systems. The main factor deterring the success of analytical models for the prediction ...
Asynchronous Dynamic Coefficients of a Three-Lobe Air Bearing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The study of dynamic whirl behavior of air bearings is fundamental for an adequate rotordynamic analysis and future validation of numerical predictions. This work shows the dynamic response of ...
Neural Network Emulation of a Magnetically Suspended Rotor
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The use of magnetic bearings in high speed/low friction applications is increasing in industry. Magnetic bearings are sophisticated electromechanical systems, and modeling magnetic bearings using ...
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