Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 1061-1080 of 9564
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Swirl Ratio Prediction Model in Rotor-Stator Cavity With Superposed Outward Radial Throughflow Based on Region Partition
(The American Society of Mechanical Engineers (ASME), 2022)The Rotor-Stator cavity (R-S cavity) is a prototype model in many engineering applications such as gas turbine secondary air systems. The flow characteristics of the R-S cavity are relatively complex considering the rotation ... -
Off-Design Performance Comparison Between Single and Two-Shaft Engines Part 1—Fixed Geometry
(The American Society of Mechanical Engineers (ASME), 2022)This paper describes an investigation into the off-design performance comparison of single and two-shaft gas turbine engines. A question that has been asked for a long time is which gas turbine delivers a better thermal ... -
A Compressor Off-Line Washing Schedule Optimization Method With a LSTM Deep Learning Model Predicting the Fouling Trend
(The American Society of Mechanical Engineers (ASME), 2022)Compressor fouling is one of the most prevalent fault modes that contribute to the performance degradation of a gas turbine power plant. Off-line washing is a standard maintenance procedure to recover the fouling degradation, ... -
Numerical Investigation on the Effect of Cylindrical Combustion Chamber Diameter-to-Depth Ratio on the Performance of Stoichiometric Natural Gas Engine With Exhaust Gas Recirculation
(The American Society of Mechanical Engineers (ASME), 2022)In this study, three cylindrical combustion chambers with different diameter-to-depth ratios were designed to accelerate the flame propagation and enhance the combustion ratio of CH4 in a stoichiometric natural gas engine ... -
Gas Turbine Combustion Optimization Using Neural Network Model and Wavelet Analysis
(The American Society of Mechanical Engineers (ASME), 2022)Rapid development in data science provides new methods for combustion tuning. This paper describes an artificial neural network (ANN) model that can accurately predict the key parameters in gas turbine combustion tuning ... -
Surrogate Models for the Prediction of Damping Ratios in Coupled Acoustoelastic Rotor-Cavity Systems
(The American Society of Mechanical Engineers (ASME), 2022)Centrifugal compressors are versatile machines that many industries employ for a wide range of different applications, including the production of highly compressed gases. During the last decades, comprehensive research ... -
Automated Crack Detection With Image Analysis for the Blades of Steam Turbine
(The American Society of Mechanical Engineers (ASME), 2022)Blades are a critical part of steam turbines. Since they usually work under extremely harsh conditions, it is necessary to detect cracks that are generated during operation in time and prevent them from developing into ... -
An Experimental Study on a Dual-Fuel Generator Fueled With Diesel and Simulated Biogas
(The American Society of Mechanical Engineers (ASME), 2022)Diesel-fueled generators are widely used for power generation in remote and/or off-grid communities. In such communities, local organic waste streams can be used to generate biogas, which can be used to replace diesel used ... -
Experimental and Numerical Investigations Into the Blade Tip Phantom Cooling Performance
(The American Society of Mechanical Engineers (ASME), 2022)In the gas turbines, the blade tip is difficult to be cooled down due to the complex flow and the intense heat transfer process here. Phantom cooling has been considered a kind of second-order cooling effect to help protect ... -
Static and Dynamic Characteristics of Journal Bearings Under Uncertainty: A Nonprobabilistic Perspective
(The American Society of Mechanical Engineers (ASME), 2022)This paper provides a comprehensive evaluation of crucial performances of hydrodynamic journal bearings subject to inherent uncertainties from a nonprobabilistic perspective. Uncertainties can arise for various reasons ... -
Robustness Analysis on the Aerothermal Performance of Turbine Blade Squealer Tip
(The American Society of Mechanical Engineers (ASME), 2022)An improved efficient uncertainty quantification (UQ) analysis framework is proposed by the combination of sparse polynomial chaos expansion (PCE) and universal Kriging (UK) metamodel to obtain the surrogate model (UK-PCE). ... -
Experimental Investigation on Leakage Characteristics of Low-Hysteresis Brush Seals
(The American Society of Mechanical Engineers (ASME), 2022)Brush seals are widely used in industry because of their excellent contact and flexible sealing. This paper investigates the influence of the axial width of the pressure relief chamber and the bristle diameter on the leakage ... -
Experimental and Numerical Flow Analysis of an Engine Realistic State-of-the-Art Turbine Rear Structure
(The American Society of Mechanical Engineers (ASME), 2022)This paper presents experimental and numerical CFD studies of the aerodynamics of a turbine rear structure (TRS). The TRS test geometry is an engine-realistic state-of-the-art design with a polygonal outer case, recessed ... -
Influence of Ambient Pressure on Measured Stiffness and Damping of Radial Gas Foil Bearings
(The American Society of Mechanical Engineers (ASME), 2022)As gas bearings have gained popularity, they have been used in a diverse range of applications. In many cases these bearings are used in various process gases at a range of pressures. Although numerous analytical tools ... -
Experimental Study of Cyclic Variations of RCCI Diesel–Methanol Engines at Multiple Simulated Elevations
(The American Society of Mechanical Engineers (ASME), 2022)The cyclic variations of reactivity-controlled compression ignition (RCCI) combustion are studied in this work via experiments conducted in an in-house diesel–methanol dual-fuel (DMDF) engine at multiple simulated elevations. ... -
Static and Rotordynamic Characteristics for Two Types of Novel Hole-Pattern Seals Operating in Supercritical CO2 Turbomachinery
(The American Society of Mechanical Engineers (ASME), 2022)In this paper, two novel hole-pattern seals were assessed for applications at the balance piston in a 14 MW supercritical CO2 turbine, focusing on the improvement of the seal leakage and rotordynamic performances. These ... -
Operational Modal Analyses of Brush Seals and Seating Load Simulations
(The American Society of Mechanical Engineers (ASME), 2022)Brush seals are one of the most effective sealing technologies in turbomachinery since they enable contact-type operation for close clearance control. Brush seal bristles must interact under turbine conditions, and the ... -
Leakage Characteristics of a Novel Hole-Pattern Damping Seal With Dovetail-Like Diversion Grooves: Numerical Simulation and Experiment
(The American Society of Mechanical Engineers (ASME), 2022)Reasonable design of the cavity shape of the damping hole effectively reduces the leakage rate of the hole-pattern damping seal (HPDS). A novel HPDS with dovetail-like diversion grooves was proposed, and the geometry outline ... -
Study on Flow and Cavitation Characteristics of an Energy Storage Chamber Type Common-Rail Injector
(The American Society of Mechanical Engineers (ASME), 2022)The high-pressure common-rail fuel injection system is one of the key technologies of diesel engines, which directly affects engine combustion. An energy storage chamber type common rail injector was studied in this paper. ... -
Assessment of Performance Boundaries and Operability of Low Specific Thrust GUHBPR Engines for EIS2025
(The American Society of Mechanical Engineers (ASME), 2022)This paper aims to develop a robust design process by approaching the performance boundaries and evaluating the operability of the pursued geared turbofan (GTF) engine with low specific thrust for entry-into-service (EIS) ...