Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 1141-1160 of 9564
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Spray Combustion Characteristics of Single/Multicomponent Surrogate Fuel for Aviation Kerosene
(The American Society of Mechanical Engineers (ASME), 2022)In this research, n-dodecane and world-average jet fuel (JW) are selected as single and multicomponent surrogate fuel of aviation kerosene to study the Jet-A spray combustion characteristics. The spray combustion phenomena ... -
Design Exploration and Performance Assessment of Advanced Recuperated Hybrid-Electric Urban Air Mobility Rotorcraft
(The American Society of Mechanical Engineers (ASME), 2022)The design of efficient, environmentally friendly, and quiet powerplant for rotorcraft architectures constitutes a key enabler for urban air mobility (UAM) application. This work focuses on the development and application ... -
Superposition Effect of the Leading Edge Film on the Downstream Film Cooling of a Turbine Vane Under Combustor Swirling Outflow
(The American Society of Mechanical Engineers (ASME), 2022)To investigate the superposition effect of the leading edge (LE) film on the downstream film cooling under swirling inflow, numerical simulations with three vane models (vane with films on the leading edge only, vane with ... -
A Method of Stall and Surge Prediction in Axial Compressors Based on Three-Dimensional Body-Force Model
(The American Society of Mechanical Engineers (ASME), 2022)The occurrence of stall and surge in axial compressors has a great impact on the performance and reliability of aero-engines. Accurate and efficient prediction of the key features during these events has long been the focus ... -
Turn-Down Capability of Ansaldo Energia's GT26
(The American Society of Mechanical Engineers (ASME), 2022)The operational flexibility of heavy-duty gas turbines is of increasing importance in today's power generation market. Fast startup, fast loading, grid frequency support, fuel flexibility, and turn-down capability are only ... -
Turbine Inlet Temperature Measurements in an 8200 KW Gas Turbine Using Water Vapor Emission
(The American Society of Mechanical Engineers (ASME), 2022)The measurement of turbine inlet temperature is challenging because of high temperatures and complicated physical access, but continuous measurement of the turbine inlet temperature is very important for maximizing turbine ... -
Mechanical Testing of Additively Manufactured Superalloy Lugs
(The American Society of Mechanical Engineers (ASME), 2022)Additively manufactured parts, in spite of their many advantages, face substantial challenges on the path toward certification. This challenge is more pronounced in the quality-demanding aviation industry, where the safety ... -
A Hybrid Adjoint Network Model for Thermoacoustic Optimization
(The American Society of Mechanical Engineers (ASME), 2022)A method is proposed that allows the computation of the continuous adjoint of a thermoacoustic network model based on the discretized direct equations. This hybrid approach exploits the self-adjoint character of the duct ... -
On-Design Component-Level Multiple-Objective Optimization of a Small-Scale Cavity-Stabilized Combustor
(The American Society of Mechanical Engineers (ASME), 2022)This work presents an on-design component-level multiple-objective optimization of a small-scaled uncooled cavity-stabilized combustor. Optimization is performed at the maximum power condition of the engine thermodynamic ... -
A Comparative Study of Methane Combustion Characteristics With Different Additions in an Optical Spark Ignition Engine
(The American Society of Mechanical Engineers (ASME), 2022)Natural gas is a promising fuel for internal combustion (IC) engines with minimal modification, whereas its low power output and slow flame propagation speed remain a challenge for automobile manufacturers. To find a method ... -
Accommodation of Multishaft Gas Turbine Switching Control Gain Tuning Problem to Inlet Guide Vane Position
(The American Society of Mechanical Engineers (ASME), 2022)This article aims to discuss the influence of compressor inlet guide vane (IGV) position on gas turbine switching control system gain tuning problem. The distinction between IGV and normally reckoned working conditions is ... -
Optimization of Airfoil Blend Limits With As-Manufactured Geometry Finite Element Models
(The American Society of Mechanical Engineers (ASME), 2022)Conventional airfoil blend repair limits are established using nominal, design intent geometry. This convention does not explicitly consider the inherent blade-to-blade structural response variation associated with geometric ... -
A Code for the Preliminary Design of Cooled Supercritical CO2 Turbines and Application to the Allam Cycle
(The American Society of Mechanical Engineers (ASME), 2022)This paper documents a thermo-fluid-dynamic mean-line model for the preliminary design of multistage axial turbines with blade cooling applicable to supercritical CO2 turbines. Given the working fluid and coolant inlet ... -
Virtual Gas Turbines Part II: An Automated Whole-Engine Secondary Air System Model Generation
(The American Society of Mechanical Engineers (ASME), 2021)The design and analysis of the secondary air system (SAS) of gas turbine engine is a complex and time-consuming process because of the complicated topology and iterative nature of SAS design. The conventional SAS design-analysis ... -
Virtual Gas Turbines Part I: A Top-Down Geometry Modeling Environment for Turbomachinery Application
(The American Society of Mechanical Engineers (ASME), 2021)The gas turbine engine design involves multidisciplinary, multifidelity iterative design-analysis processes. These highly intertwined processes are nowadays incorporated in automated design frameworks to facilitate ... -
Investigation of Structurally and Aerodynamically Mistuned Oscillating Cascade Using Fully Coupled Method
(The American Society of Mechanical Engineers (ASME), 2021)There seems to be a lack of clear and systematic understanding of physical behavior and mechanisms of mistuned blade rows, particularly in the context of the aerodynamic mistuning versus the structural (frequency) mistuning. ... -
Influence of Hole-to-Hole Interaction on the Acoustic Behavior of Multi-Orifice Perforated Plates
(The American Society of Mechanical Engineers (ASME), 2021)A key factor for developing low-emission combustion systems in modern gas turbines and aero-engines is the acoustic liner's optimized design. Several models are available in the literature for the acoustic impedance of ... -
Tolerance-Based Optimization of Sinking Electrical Discharge Machining for Industrial Seal Slot Manufacture
(The American Society of Mechanical Engineers (ASME), 2021)Seal plates for turbine vanes significantly reduce gap losses and thus play a major role in increasing the efficiency of turbines. The industrial production of seal slots, which position the seal plates in the turbine ... -
Numerical Methods for Calculating Component Modes for Geometric Mistuning Reduced-Order Models
(The American Society of Mechanical Engineers (ASME), 2021)Geometric mistuning models formulated from component mode synthesis methods often require the calculation of component modes, particularly constraint and fixed interface normal modes (FINMs), during substructuring. For ... -
Revolutionary Vertical Lift Technology Side-by-Side Hybrid Concept Vehicle Powertrain Dynamic Model
(The American Society of Mechanical Engineers (ASME), 2021)The side-by-side (SBS) hybrid is one of several Revolutionary Vertical Lift Technology (RVLT) concept aircraft identified by the National Aeronautics and Space Administration (NASA) to investigate Urban Air Mobility (UAM) ...