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RISResearch on Start-Stop Performance of Journal Bearing Based on an Isothermal and Mixed Lubrication Model With Different Acceleration and Deceleration Forms in Consideration
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In order to explore the influence of different acceleration and deceleration forms on the bearing performance during acceleration and deceleration, an isothermal and mixed lubrication model for journal bearings was ...
Topology Optimization of the Misaligned Water-Lubricated Thrust Bearings
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Misalignment results in uneven force on the contact surface, which not only increases friction loss but also shortens the bearing's service life, especially for water-lubricated bearings. In this study, an advanced approach ...
Reduced-Order Modeling for Stability and Steady-State Response Analysis of Asymmetric Rotor Using Three-Dimensional Finite Element Model
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: A generalized and efficient technique of reduced-order model (ROM) is proposed in this paper for stability and steady-state response analysis of an asymmetric rotor based on three-dimensional (3D) finite element model. The ...
Fast Reconstruction Method of the Stress Field for the Steam Turbine Rotor Based on Deep Fully Convolutional Network
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Since it is difficult to directly measure the transient stress of a steam turbine rotor in operation, a rotor stress field reconstruction model based on the deep fully convolutional network for the startup process is ...
Water Droplet Erosion Life Prediction Method for Steam Turbine Blade Materials Based on Image Recognition and Machine Learning
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, a method for predicting remaining useful life (RUL) of turbine blade under water droplet erosion (WDE) based on image recognition and machine learning is presented. Using the experimental rig for testing the ...
Breaking Mechanism and Performance of Coal Subjected to Water Jets Under High In Situ Stress
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effect of in situ stress on the coal-breaking characteristics of water jets remains unclear, prohibiting the deep coalbed methane (CBM) development. Water jet coal-breaking experiments under different mean three-dimensional ...
Thermal Performance of a Water Cooled Microchannel Heat Sink With Grooves and Obstacles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: With the rapid development of microelectromechanical systems (MEMS) in IT industry, the heat flux in microchannel has reached a high level which demands preferable cooling technology. Water cooling has become a favor cooling ...
An Experimental Study on Heat Transfer Enhancement of Non Newtonian Fluid in a Rectangular Channel With Dimples/Protrusions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Dimple and protrusion play important roles in the heat transfer enhancement and flow characteristic in cooling channels, which widely employed within electronic cooling systems. NonNewtonian fluid has significant differences ...
Transient Analysis of the Textured Journal Bearing Operating With the Piezoviscous and Shear-Thinning Fluids
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, a mixed lubrication model is presented to analyze the tribological behavior of the textured journal bearings operating from mixed to hydrodynamic lubrication regimes. In particular, the effects of fluid ...
Flow and Heat Transfer Characteristics of Single Jet Impinging on Dimpled Surface
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Based on combined particle image velocimetry (PIV) and numerical simulation, the flow and heat transfer characteristics of a single jet impinging on a dimpled surface for Dj/D = 0.318, 0.5, 1.045; خ´/D = 0.1, 0.2, ...