Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 941-960 of 9564
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Improvement of Silicon Nitride Turbine Blade Impact Resistance Under Uniaxial Compression Loading
(The American Society of Mechanical Engineers (ASME), 2022)The inside-out ceramic turbine (ICT), a novel microturbine rotor architecture, uses monolithic ceramic turbine blades held in compression by a rotating structural shroud instead of traditional superalloy turbine blades in ... -
Bayesian Calibration of Kinetic Parameters in the CH Chemistry Toward Accurate Prompt-NO Modelling
(The American Society of Mechanical Engineers (ASME), 2022)Significant efforts made by the gas turbine industry have helped reduce nitrogen oxides (NOx) emissions considerably. To meet and surpass the increasingly stringent regulations, accurate and robust thermochemical mechanisms ... -
A Reduction Technique for the Calculation of the Forced Response of Bladed Disks in the Presence of Contact Mistuning at Blade Root Joints
(The American Society of Mechanical Engineers (ASME), 2022)The effect of differences in nominally equal sectors of a bladed disk (mistuning) is a well-known problem for designers since the forced response may show localized amplification of the blade response with respect to a ... -
Design of an Additively Manufactured Recuperator With 800 °C Inlet Temperature for sCO2 Power Cycle Application
(The American Society of Mechanical Engineers (ASME), 2022)Recuperators with design temperatures at and above 800 °C can further increase the thermal efficiency of supercritical CO2 power cycles by enabling higher turbine exhaust temperatures. Mar-M247 is a well-suited nickel-based ... -
A Study on Fundamental Combustion Properties of Trimethyl Orthoformate: Experiments and Modeling
(The American Society of Mechanical Engineers (ASME), 2022)Trimethyl orthoformate (TMOF: HC(OCH3)3) has recently been examined as a viable biofuel. TMOF is a branched isomer of oxymethylene ether-2 (OME2) that, due to its high oxygen content and lack of direct carbon-carbon bonds, ... -
Ensemble Learning Approach to the Prediction of Gas Turbine Trip
(The American Society of Mechanical Engineers (ASME), 2022)In the field of gas turbine (GT) monitoring and diagnostics, GT trip is of great concern for manufactures and users. In fact, due to the number of issues that may cause a trip, its occurrence is not infrequent, and its ... -
Theoretical and Experimental Comparisons for Rotordynamic Coefficients of a Multiscratched Tilting Pad Journal Bearing
(The American Society of Mechanical Engineers (ASME), 2022)This paper presents a thermo-elasto-hydrodynamics model (TEHD) based on a mass conservative generalized Reynolds equation, coupled with three-dimensional (3D) energy equation for the oil film, and a full 3D thermo-mechanical ... -
Combined Cycle, Heat Pump, and Thermal Storage Integration: Techno-Economic Sensitivity to Market and Climatic Conditions Based on a European and United States Assessment
(The American Society of Mechanical Engineers (ASME), 2022)The integration of a heat pump (HP) with a combined cycle gas turbine (CCGT) to control the inlet air temperature is a promising technology to meet the requirements imposed by the current electricity systems in terms of ... -
Study on Combustion Characteristics of Diesel/Natural Gas/Hydrogen RCCI Engine
(The American Society of Mechanical Engineers (ASME), 2022)With the increasing environmental and energy problems, the development of new combustion technology has become a hot topic in the research of internal combustion engine. Reactivity controlled compression ignition (RCCI) ... -
The Flutter Stability of Mistuned Bladed Disks Subjected to the Coriolis Effect
(The American Society of Mechanical Engineers (ASME), 2022)Intentional frequency mistuning referred to as detuning is known to be an effective mean to prevent aeroelastic flutter in gas turbines. The Coriolis effect, which is usually discarded, can reduce the mistuning effects and ... -
Active Vibration Mitigation of Bladed Structures With Piezoelectric Patches by Decentralized Positive Position Feedback Controller
(The American Society of Mechanical Engineers (ASME), 2022)This paper proposes an active damping system to mitigate the vibration of bladed assemblies. The damping system consists of multiple pairs of piezoelectric patches accompanied by a decentralized control configuration. To ... -
An Efficient Quantification Method Based on Feature Selection for High-Dimensional Uncertainties of Multistage Compressors
(The American Society of Mechanical Engineers (ASME), 2022)Multistage compressors are widely used in aero-engines, gas turbines, and industrial compressors. However, many inevitable geometric/condition uncertainties will lead to low manufacturing qualified rate and severe performance ... -
Effects of Cooled Exhaust Gas Recirculation Combined With Prechamber Jet Ignition on the Combustion Characteristics in a Kerosene-Fueled Spark Ignition Engine
(The American Society of Mechanical Engineers (ASME), 2022)For security and logistical convenience, the single fuel forward policy hopes to use a single kerosene fuel to replace a variety of military fuels, especially the unsafe gasoline. However, the performance of kerosene-fueled ... -
Finite Element Analysis of Bent Rotors
(The American Society of Mechanical Engineers (ASME), 2022)The rotating components of a gas turbine engine are typically designed around a perfectly straight centerline. In spite of advanced manufacturing technology and the conviction of the human eye, straightness is virtually ... -
Aerodynamic Analysis of Conventional and Boundary Layer Ingesting Propellers
(The American Society of Mechanical Engineers (ASME), 2022)The boundary layer ingestion (BLI) concept has emerged as a novel technology for reducing aircraft fuel consumption. Several studies designed BLI-fans for aircraft. BLI-propellers, although, have still received little ... -
Design of a Compact Dry Cooler With an Aluminum Heat Exchanger Core for a Supercritical CO2 Power Cycle Is Evaluated for a Concentrating Solar Power Application
(The American Society of Mechanical Engineers (ASME), 2022)As the supercritical CO2 power cycle develops and the component technologies mature, there is still a need to reduce the associated capital and operating costs to maintain a competitive levelized cost of electricity (LCOE) ... -
Study to Adapt Industrial Gas Turbines for Significant and Viable CO2 Emissions Reduction
(The American Society of Mechanical Engineers (ASME), 2022)Gas turbines have been a significant part of energy production and transportation for decades and should continue indefinitely. As the world evaluates the best approaches to achieve net-zero greenhouse gas emissions in the ... -
On the Effect of Frequency Separation, Mass Ratio, Solidity, and Aerodynamic Resonances in Coupled Mode Flutter of a Linear Compressor Cascade
(The American Society of Mechanical Engineers (ASME), 2022)At a low mass ratio of structure to air, the work-per-cycle approach, or better known as the energy method, will lead to nonconservative results as aerodynamic coupling of modeshapes acts destabilizing. Using the p–k method ... -
Numerical Investigation of Bladeless Compressor on Different Disk Spaces and Diffuser Configurations
(The American Society of Mechanical Engineers (ASME), 2022)The cost-effectiveness of turbomachinery is a key aspect within the small-size compressor market. For this reason, Tesla turbomachinery, invented by Nikola Tesla in 1913, could be a good solution, particularly for low ... -
Comparison of Cast, Wrought, and LPBF Processed IN718 Concerning Crack Growth Threshold and Fatigue Crack Growth Behavior
(The American Society of Mechanical Engineers (ASME), 2022)This study focuses on the influence of microstructure and ductility on the short crack behavior and the fatigue crack growth (FCG) threshold. For this, an additively manufactured batch of the nickel-based alloy IN718, made ...