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RISNumerical Investigation of Creep–Fatigue Behavior in a Steam Turbine Inlet Valve Under Cyclic Thermomechanical Loading
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The aim of this study was to investigate the cyclic creep–fatigue interaction behavior in a steam turbine inlet valve under cyclic thermomechanical loading conditions. Three years and nine iterations of idealized ...
Unsteady Behaviors of Steam Flow in a Control Valve With T-Junction Discharge Under the Choked Condition: Detached Eddy Simulation and Proper Orthogonal Decomposition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Due to the practical space limitation, the control valve in industrial utilities is usually immediately followed by a short flow passage, which would introduce considerable complexity into highly unsteady flow behaviors, ...
Proper Orthogonal Decomposition and Extended- Proper Orthogonal Decomposition Analysis of Pressure Fluctuations and Vortex Structures Inside a Steam Turbine Control Valve
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In steam turbine control valves, pressure fluctuations coupled with vortex structures in highly unsteady three-dimensional flows are essential contributors to the aerodynamic forces on the valve components, and are major ...
A Review on Fluid-Induced Flag Vibrations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Fluid-induced flag vibrations provide unattended, efficient, low-cost, and scalable solutions for energy harvesting to power distributed wireless sensor nodes, heat transfer enhancement in channel flow, and mixing enhancement ...
A Review on Fluid-Induced Flag Vibrations
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: Fluid-induced flag vibrations provide unattended, efficient, low-cost, and scalable solutions for energy harvesting to power distributed wireless sensor nodes, heat transfer enhancement in channel flow, and mixing enhancement ...
Data Assimilation of Steam Flow Through a Control Valve Using Ensemble Kalman Filter
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The present work concentrates on the simulation enhancement of steam flow through a control valve using the data assimilation (DA) approach based on ensemble Kalman filter (EnKF). The k-ω shear stress transport (SST) model ...
Flow Structures and Unsteady Behaviors of Film Cooling from Discrete Holes Fed by Internal Crossflow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The flow structures and unsteady behaviors of a flat plate film cooling flow behind a single row of circular holes fed by internal crossflow were extensively investigated. The investigation was achieved experimentally using ...
A Model-Guided Neural Network for the Prediction of Creep Behavior Under in-Service Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Data-driven neural network methods have been widely applied for the prediction of stress–strain behavior, but have proven ill-suited for the extrapolation of time-dependent creep behavior. To overcome this problem, we ...
Multidisciplinary Design Optimization for Performance Improvement of an Axial Flow Fan Using Free-Form Deformation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper describes a multidisciplinary design optimization for performance improvement of an electric-ducted fan rotor using free-form deformation (FFD) and data mining techniques. A practical partitioning approach for ...
Comparative Study of Flange to Seal Contact Couplings With Bolt Relaxation Under Creep Condition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Future coalfired steam turbines promise increased efficiency and low emissions. However, this comes at the expense of increased thermal load from higher inlet steam temperatures and pressures leading to severe creep that ...