Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 21-40 of 9244
-
A Novel Thermally Integrated CO2-Carnot Battery (TI-PTES) Utilizing Cold Thermal Storage
(The American Society of Mechanical Engineers (ASME), 2024)The growing integration of renewable energy sources in the energy grid presents intermittency and negative pricing challenges, necessitating large-scale energy storage solutions. Pumped thermal energy storage (PTES) can ... -
Reverse Thrust Aerodynamics of Variable Pitch Fans With Inlet Distortion
(The American Society of Mechanical Engineers (ASME), 2024)Variable pitch fans (VPFs) can improve the operability of low pressure ratio fan systems by repitching the rotor blades. If a variable pitch fan can generate sufficient reverse thrust on landing, it will also eliminate the ... -
Numerical Analysis and Design of New Exhaust Section Downstream of Constant Volume Combustor
(The American Society of Mechanical Engineers (ASME), 2024)Pressure gain combustors (PGC) exploit either their isochoric or detonative combustion increasing the theoretical thermal efficiency of a gas turbine cycle. On this basis, a constant-volume combustor (CVC) is developed ... -
Evaluation of Data-Driven Classifiers for an Ignition Forecast of Large Gas Turbines
(The American Society of Mechanical Engineers (ASME), 2024)Prediction of successful ignition is a challenging task that requires knowledge of the local thermochemical state in highly turbulent flow conditions. For typical industrial gas turbine (GTs) conditions operated on active ... -
Assessment of Rotordynamic Characteristics for Two Types of Damper Seals Operating in a Steam Turbine
(The American Society of Mechanical Engineers (ASME), 2024)Damper seals (such as pocket damper seal (PDS), hole-pattern/honeycomb damper seals) and swirl brakes have been commonly used for many years as a solution for the rotor vibration instability in multiple-stage centrifugal ... -
Mass and Heat Exchange in Rotating Compressor Cavities With Variable Cob Separation
(The American Society of Mechanical Engineers (ASME), 2024)Next generation aeroengines will operate at ever-increasing pressure ratios with smaller cores, where the control of blade-tip clearances across the flight cycle is an emerging design challenge. Such clearances are affected ... -
Suppression of Combustion Oscillations in Hydrogen-Enriched Can-Type Combustors Through Fuel Staging
(The American Society of Mechanical Engineers (ASME), 2024)To achieve decarbonization in power-generating gas turbines, the technology of mixing hydrogen with natural gas is garnering significant attention. However, when blending natural gas with hydrogen, the altered combustion ... -
Large Eddy Simulation of Ammonia–Hydrogen Nonpremixed Flames Stabilized on a Bluff Body Burner
(The American Society of Mechanical Engineers (ASME), 2024)The demand for carbon-free fuels such as ammonia (NH3) and hydrogen (H2) has been growing rapidly due to stricter environmental policies on carbon emissions. Since ammonia is easier to store and transport, it is considered ... -
Reduction of the Emission Footprint of Gas Turbines in Future Energy System Scenarios Through Optimized Hydrogen Admixture Strategies
(The American Society of Mechanical Engineers (ASME), 2024)Within the energy sector, the mitigation of climate change necessitates a paradigm change toward the replacement of conventional with sustainable power generation technologies. Due to the inherent volatility of renewable ... -
Modeling of Frictional Interbristle Contact in Brush Seals With Shaft Radial Movements
(The American Society of Mechanical Engineers (ASME), 2025)Brush seals are utilized in turbines to minimize leakage flows and enhance thermal efficiency. Their widespread use faces challenges like pressure-stiffening and hysteresis, leading to unpredictable performance. This work ... -
Experimental Investigation on the Dynamic Response of a Turbocharger Centrifugal Compressor in Surge Transitions
(The American Society of Mechanical Engineers (ASME), 2025)Centrifugal compressors play a critical role in various industrial applications, and understanding their operational behavior, especially during surge conditions, is essential for enhancing efficiency and reliability. This ... -
Experimental Study of the Real Gas Effects of CO2 on the Aerodynamic Performance Characteristics of a 1.5-Stage Axial Compressor
(The American Society of Mechanical Engineers (ASME), 2025)The thermodynamic properties of CO2 do not obey the ideal gas law and the simplified equation of state. The enthalpy and sonic speed depend on both temperature and pressure whereas the enthalpy and the speed of sound of ... -
Wave Reformer Channel Shape Design for Enhanced Hydrogen Pyrolysis
(The American Society of Mechanical Engineers (ASME), 2024)A wave reformer utilizes shock-wave heating resulting from pressure exchange between a driver and a driven (reactant gas) to initiate a thermal decomposition reaction. Although widely applicable to many reactions, this ... -
Hybrid Surrogate Modeling Approach for Data Reduction and Design Space Exploration of Turbine Blades
(The American Society of Mechanical Engineers (ASME), 2024)The conventional iterative optimization of turbine blades using computer-aided engineering simulations is resource-intensive, with high costs and time demands, as well as significant challenges in computational requirements ... -
Comprehensive Experimental Assessment of Unsteady Pressure and Heat Flux in a Small-Core Turbine Over-Tip Shroud
(The American Society of Mechanical Engineers (ASME), 2024)For novel high-speed small core turbines, with tip clearance below 0.5 mm, even small blade-to-blade tip clearance variation is significant. The assessment of these complex flows is pertinent to the design of the next ... -
Flashback Prevention in a Hydrogen-Fueled Reheat Combustor by Water Injection Optimized With Global Sensitivity Analysis
(The American Society of Mechanical Engineers (ASME), 2024)This paper investigates water injection effects in a simplified Ansaldo GT36 reheat system under realistic conditions of 20 atm using large eddy simulation (LES) coupled with thickened flame modeling and adaptive mesh ... -
Design and Simulation of eVTOL Aircraft Thermal Management System
(The American Society of Mechanical Engineers (ASME), 2024)This paper focused on designing a thermal management system (TMS) for a parallel hybrid electric (PHE) XV-15 tiltrotor aircraft used in urban air mobility (UAM) applications. The TMS is integrated into the aircraft system ... -
Laser Powder Bed Fusion Manufactured Hydrostatic Journal Bearings for Turbomachinery: Design and Measurements of Static Load Testing With Air, Water, and Liquid Nitrogen
(The American Society of Mechanical Engineers (ASME), 2024)Modern turbomachinery demands simplified components and compact shaft support systems. This study introduces novel hydrostatic journal bearings incorporating multiple tilting pads and fluid feeding features, which are ... -
V-Spline Design for Enhanced Performance in Turbine Blade Internal Cooling
(The American Society of Mechanical Engineers (ASME), 2024)Past experiments have consistently shown that V-shaped rib turbulators are among the best in heat transfer performance. While there is literature on the V rib design in various experimental studies, there is no literature ... -
Numerical Study of Low Engine Order Excitations Due to Manufacturing Variability Part I: Characterization of the Geometric Scatter and Its Effect on Forced Response
(The American Society of Mechanical Engineers (ASME), 2024)The geometric scatter in the surfaces of blades and vanes due to manufacturing variability has an impact on the dynamics (structural mistuning) that has been widely studied, but also on the aerodynamics. This geometric ...