Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 881-900 of 9564
-
Particulate Deposition Effects on Internal Swirl Cooling of Turbine Blades
(The American Society of Mechanical Engineers (ASME), 2023)Particulate deposition effects on flow and heat transfer in an internal swirl tube subjected to fly ash ingestion were investigated by constructing an unsteady simulation framework, in which a particle–wall interaction ... -
Experimental Force Coefficients for a Fully-Partitioned Pocket Damper Seal and Comparison to Other Two Seal Types
(The American Society of Mechanical Engineers (ASME), 2023)Labyrinth seals (LSs), honeycomb seals (HCSs) and hole-pattern seals, pocket damper seals (PDSs), and fully-partitioned damper seals (FPDSs) serve as balance pistons on the discharge side of barrel-type centrifugal ... -
Direct Numerical Simulation of Partial Fuel Stratification Assisted Lean Premixed Combustion for Assessment of Hybrid G-Equation/Well-Stirred Reactor Model
(The American Society of Mechanical Engineers (ASME), 2023)Partial fuel stratification (PFS) is a promising fuel injection strategy to stabilize lean premixed combustion in spark-ignition (SI) engines. PFS creates a locally stratified mixture by injecting a fraction of the fuel, ... -
Statistical Rule Extraction for Gas Turbine Trip Prediction
(The American Society of Mechanical Engineers (ASME), 2023)Gas turbine trip is an operational event that arises when undesirable operating conditions are approached or exceeded, and predicting its onset is a largely unexplored area. The application of novel artificial intelligence ... -
Short-Time Creep Deformation of the Coarse-Grained Nickel-Base Alloy 247 and Its Implications on the High-Cycle Fatigue Behavior
(The American Society of Mechanical Engineers (ASME), 2023)Cast polycrystalline nickel-base superalloys are typically used for critical high temperature aerospace and automotive components, such as turbine blades or turbocharger wheels. These high temperature components can undergo ... -
A Numerical Study on the Combustion and Emissions Characteristics of a Heavy Duty Natural Gas/Diesel RCCI Engine
(The American Society of Mechanical Engineers (ASME), 2023)Due to energy shortages and environmental issues, the application of reactivity controlled compression ignition (RCCI) combustion in internal combustion engines has received extensive attention. Through the verification ... -
The Role of Hydrodynamic Instabilities on Near-Lean Blowout Flame Shapes in a Swirl-Stabilized Spray Combustor
(The American Society of Mechanical Engineers (ASME), 2023)This study investigates the role of hydrodynamic instabilities on near-lean blowout (LBO) flame shapes in a swirl-stabilized spray combustor. Hydrodynamic instabilities often manifest themselves in swirling flows as a ... -
Experimentally Measured Effectiveness of Different Shroud Swirl Brake Profiles in a Centrifugal Compressor
(The American Society of Mechanical Engineers (ASME), 2023)As centrifugal compressors are pushed to operate at higher pressures and higher power levels, destabilizing gas forces often increase the challenge of designing a stable rotordynamic system. While technical innovations ... -
Aerodynamic Design of Cooling Guide for Electrical Machine in Electric Ducted Fan
(The American Society of Mechanical Engineers (ASME), 2022)Electric ducted fan has newly emerged as the most compact type of propulsion fan for flying cars, because of its flexible configuration arrangement, low noise level and high safety level operation. Typically, an electric ... -
The Effect of Rectangular Confinement Aspect Ratio on the Flame Transfer Function of a Turbulent Swirling Flame
(The American Society of Mechanical Engineers (ASME), 2022)The flame transfer function (FTF) has been experimentally investigated for a premixed, turbulent and highly swirled flame in rectangular enclosures with varying aspect ratio. A range of equivalence ratios and inlet bulk ... -
Detection of Cracks in Turbomachinery Blades by Online Monitoring
(The American Society of Mechanical Engineers (ASME), 2023)The presence of a crack in a blade can change the natural frequencies of that blade. It has long been a goal to detect blade cracks by assessing the change in a measured vibration frequency of the blade over time. It has ... -
Techno-Economic Comparison of Supercritical CO2, Steam, and Organic Rankine Cycles for Waste Heat Recovery Applications
(The American Society of Mechanical Engineers (ASME), 2022)Supercritical CO2 (sCO2) is taking a growing interest in both industry and academic communities as a promising technology capable of high efficiency, flexibility, and competitive capital costs. Many possible applications ... -
Stability of a Rotor Partially Filled With Fluid: Test Facility and Experimental Results
(The American Society of Mechanical Engineers (ASME), 2022)Fluid trapped in a hollow, rotating component may lead to subsynchronous vibrations, resulting in high vibration amplitudes. This asynchronous response is observed around 0.55–0.92× after passing through the first critical ... -
Numerical Investigation of Rich-Lean Staging in a SGT-750 Scaled Dry Low Emission Burner With Partially Decomposed Ammonia
(The American Society of Mechanical Engineers (ASME), 2022)Ammonia is emerging as a very convenient hydrogen- and energy-carrier in the context of present efforts to curb carbon emissions from the power-generation and transport sectors. As opposed to hydrogen, the properties of ... -
Deformation and Damage Behavior of a 1Cr-Cast Steel Under Multiaxial Loading at Elevated Temperatures
(The American Society of Mechanical Engineers (ASME), 2022)Rising demands on material performance at high temperature in components under complex loading such as steam- and gas turbine housings require an increase in versatility and precision of component life modeling approaches. ... -
Effect of Channel Size on Air-Cooling Performance in Interior Permanent Magnet Motor Driving Aviation Fans at High Altitude
(The American Society of Mechanical Engineers (ASME), 2022)To enhance worldwide environmental conditions, the air transport industry must drastically reduce carbon dioxide emissions. Electrification of aircraft propulsion systems is one way to meet this demand. In particular, the ... -
Machine Learning-Enabled Prediction of Transient Injection Map in Automotive Injectors With Uncertainty Quantification
(The American Society of Mechanical Engineers (ASME), 2022)Accurate prediction of injection profiles is a critical aspect of linking injector operation with engine performance and emissions. However, highly resolved injector simulations can take one to two weeks of wall-clock time, ... -
Ammonia Slip Estimation Based on Ammonia Slip Catalyst Control-Oriented Modeling and On-Board Diagnostics NOX Sensor Cross-Sensitivity Analysis
(The American Society of Mechanical Engineers (ASME), 2022)The incoming emission regulations for internal combustion engines are gradually introducing new pollutant species, which require greater complexity of the aftertreatment systems concerning layout, control, and diagnostics. ... -
On Integrated Fluid Screening and Turbomachinery Design for Optimized Industrial Heat Pumps
(The American Society of Mechanical Engineers (ASME), 2022)This work presents an approach to the contextual integration of fluid selection and compressor design for the cycle design of efficient industrial heat pumps. The vapor-compression cycle of an air–water heat pump operated ... -
A Model and Experimental Validation for a Piston Rings—Squeeze Film Damper: A Step Toward Quantifying Air Ingestion
(The American Society of Mechanical Engineers (ASME), 2022)Rotor-bearing systems often rely on squeeze film dampers (SFDs) to increase the dynamic stability and reduce rotor motion amplitudes while traversing critical speeds. In aircraft engines, to increase the damping capacity ...