Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 701-720 of 9564
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Integrated Design of a Variable Cycle Engine and Aircraft Thermal Management System
(The American Society of Mechanical Engineers (ASME), 2024)The integrated design of a variable cycle engine (VCE) and an aircraft thermal management system (TMS) is investigated. The integrated system is designed using the multiple design point approach in order to achieve required ... -
Numerical Assessment of a Rich-Quench-Lean Staging Strategy for Clean and Efficient Combustion of Partially Decomposed Ammonia in the Constant Pressure Sequential Combustion System
(The American Society of Mechanical Engineers (ASME), 2024)In a future energy system prospective, predictably dominated by (often) remote and (always) unsteady, nondispatchable renewable power generation from solar and wind resources, hydrogen (H2) and ammonia (NH3) have emerged ... -
Impact of Installation on the Performance of an Aero-Engine Exhaust at Wind-Milling Flow Conditions
(The American Society of Mechanical Engineers (ASME), 2024)This paper presents a numerical investigation of the effect of wing integration on the aerodynamic behavior of a typical large civil aero-engine exhaust system at wind-milling flow conditions. The work is based on the dual ... -
A Holistic Methodology to Quantify Product Competitiveness and Define Innovation Requirements for Micro Gas Turbine Systems in Hydrogen-Based Energy Storage Applications
(The American Society of Mechanical Engineers (ASME), 2024)Microgas turbines are an on-site power and heat generation technology with a small footprint, low gaseous (NOx) and acoustic emissions, low maintenance, and high-grade heat. They entered the market at the dawn of the ... -
Prospects for Low-Resolution NDIR Sensors to Discern Ignition Properties of Fuels
(The American Society of Mechanical Engineers (ASME), 2024)The cetane number (CN) is an important fuel property to consider for compression ignition engines as it is a measure of a fuel's ignition delay. Derived cetane number (DCN) already varies significantly within jet fuels. ... -
Combustion Diagnostics and Emissions Measurements of a Novel Low NOx Burner for Industrial Gas Turbine Operated With CO2 Diluted Methane/Air Mixtures
(The American Society of Mechanical Engineers (ASME), 2024)While the employment of Exhaust Gas Recirculation (EGR) is a well-established technique in Internal Combustion Engines to limit NOx emissions, its adoption in Gas Turbine engines has not yet found a practical application ... -
An Optimal Numerical Strategy for Intake in Crosswind Conditions
(The American Society of Mechanical Engineers (ASME), 2024)Crosswind can reduce the operability of an aeroengine significantly at static or near static operating conditions. Computational fluid dynamics predictions of the flow at crosswind conditions will play an important part ... -
Quantification of Mixing Quality Effects on Flashback Limits for H2-Rich Fuel Gases in Lean Premixed Combustion Using Laser-Induced Fluorescence of Acetone
(The American Society of Mechanical Engineers (ASME), 2024)One of the main challenges arising from hydrogen-rich fuel mixtures is to prevent flame flashback. In typical gas turbines, the fuel is commonly injected through holes in the axial swirler vanes to achieve a high mixing ... -
Analyzing Engine Exhaust Gas Temperature Pulsations and Gas-Dynamics Using Thin-Wire Thermocouples
(The American Society of Mechanical Engineers (ASME), 2024)The exhaust of internal combustion engines (ICEs) is characterized by rapid large amplitude exhaust gas temperature (EGT) pulsations that demand high-bandwidth measurements for accurate instantaneous and mean EGTs. While ... -
Advanced Modeling of Flow and Heat Transfer in Rotating Disk Cavities Using Open-Source Computational Fluid Dynamics
(The American Society of Mechanical Engineers (ASME), 2024)Code_Saturne, an open-source computational fluid dynamics (CFD) code, has been applied to a range of problems related to turbomachinery internal air systems. These include a closed rotor–stator disk cavity, a co-rotating ... -
Effect of Inert Species on the Static and Dynamic Stability of a Piloted, Swirl-Stabilized Flame
(The American Society of Mechanical Engineers (ASME), 2024)Carbon sequestration and utilization has been proposed as a method for decarbonizing high-efficiency industrial gas turbines operating on natural gas fuels for power generation and industrial markets. To increase the ... -
Performance, Emissions, and Decarbonization of an Industrial Gas Turbine Operated With Hydrotreated Vegetable Oil
(The American Society of Mechanical Engineers (ASME), 2024)As part of Uniper's strategy for carbon neutrality in its European power generation by 2035, a Kraftwerk Union/Siemens V93.0 gas turbine (GT) in Malmö, Sweden was operated with hydrotreated vegetable oil (HVO) as a low-carbon ... -
Development of an Artificial Intelligence Model to Predict Combustion Properties, With a Focus on Auto-Ignition Delay
(The American Society of Mechanical Engineers (ASME), 2024)Hydrogen-compatible gas turbines are one way to decarbonize electricity production. However, burning and handling hydrogen is not trivial because of its high reactivity and tendency to detonate. Mandatory safety parameters, ... -
Ignition Delay Times and Chemical Kinetic Model Validation for Hydrogen and Ammonia Blending With Natural Gas at Gas Turbine Relevant Conditions
(The American Society of Mechanical Engineers (ASME), 2024)Ignition delay times from undiluted mixtures of natural gas (NG)/H2/Air and NG/NH3/Air were measured using a high-pressure shock tube at the University of Central Florida. The combustion temperatures were experimentally ... -
Identification of Dynamic Force Coefficients for an Additively Manufactured Hermetic Squeeze Film Bearing Support Damper Utilizing a Pass-Through Channel
(The American Society of Mechanical Engineers (ASME), 2024)The following paper presents breakthrough experimental results for a new hermetic squeeze film damper (HSFD) concept that is integrally designed within an externally pressurized tilting-pad radial gas bearing support. The ... -
Experimental Investigation on Microsecond Pulsed Plasma Supported Biogas Combustion
(The American Society of Mechanical Engineers (ASME), 2024)This paper evaluates the effect of a microsecond pulsed plasma (MPP) on the stabilization and emission characteristics of non-premixed biogas/air flames with various CO2 contents. The MPP is generated by a unique DC-pulsed ... -
Insights Into the Flow Field and Performance of a Boundary Layer Pump
(The American Society of Mechanical Engineers (ASME), 2023)A flow field analysis of a realistic, integrated, multidisk boundary layer pump as is necessary for investigating the reasons for typically quoted low efficiencies in such pumps is described. The study focuses on the ... -
Integrated Design of Axial Slot Casing Treatment and Blades in a Low-Speed Single Stage Axial Compressor
(The American Society of Mechanical Engineers (ASME), 2024)Casing treatment has been used to enhance the stability of axial-flow compressor by extending the stall margin; it also induces strong interaction with compressor blades, as demonstrated in the open literature. Revealing ... -
Spatial Temperature and Water Molar Concentration Measurements Using Thermal and Electrostrictive Laser-Induced Grating Spectroscopy During Operation of a Swirl Burner at Pressure
(The American Society of Mechanical Engineers (ASME), 2024)Laser-Induced Grating Spectroscopy (LIGS) was applied in a high-pressure combustion facility. Instantaneous (sub-μs), spatially resolved (within 5 mm) measurements of temperature and molar fractions of water were obtained ... -
Friction Saturated Limit Cycle Oscillations—Test Rig Design and Validation of Numerical Prediction Methods
(The American Society of Mechanical Engineers (ASME), 2023)In this paper, an experimental test rig for friction saturated limit cycle oscillations is proposed to provide a validation basis for corresponding numerical methods. Having in mind the application of turbine blades, an ...