Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 181-200 of 9298
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Techno-Economic Comparative Assessment of High-Temperature Heat Pump Architectures for Industrial Pumped Thermal Energy Storage
(The American Society of Mechanical Engineers (ASME), 2024)The industrial sector is a key global source of wealth, but it is also recognized as a major challenge toward worldwide decarbonization. Today, the industrial sector requires more than 22% of the global energy demand as ... -
Multimodal Shunt Damping of Monolithic Bladed Drums Using Multiple Digital Vibration Absorbers
(The American Society of Mechanical Engineers (ASME), 2024)Based on a digital realization of piezoelectric shunt circuits, this work presents a proof-of-concept damping approach tailored to address the complex dynamics of monolithic bladed drums (BluMs) and attenuate their vibrations. ... -
The Role of the Working Fluid and Nonideal Thermodynamic Effects on Performance of Gas-Lubricated Bearings
(The American Society of Mechanical Engineers (ASME), 2024)Small-scale turbomachinery operating at high rotational speed is a key technology for increasing the power density of energy and propulsion systems. A notable example is the turbine of an organic Rankine cycle turbogenerator ... -
On a New Cyclic Symmetry Formulation Accounting for Boundaries Undergoing Nonlinear Forces
(The American Society of Mechanical Engineers (ASME), 2024)Although cyclic symmetry theory was initially developed for linear structures, the introduction of nonlinear forces on internal nodes of the fundamental sector does not affect the methodology. Nevertheless, the method is ... -
Numerical Study of Low Engine Order Excitations Due to Manufacturing Variability Part II: An Efficient Approach for Stochastic Studies
(The American Society of Mechanical Engineers (ASME), 2024)In turbomachinery rows, the geometric variability between the airfoils induces nonuniformity in the flow, which directly translates into low engine order (LEO) excitation and vibration in the adjacent rows. Direct simulations ... -
Temperature Margin Calculation During Finite Element Creep Simulations
(The American Society of Mechanical Engineers (ASME), 2024)Creep deformation in turbomachinery applications is a highly nonlinear phenomenon where ±15 °C may halve or double the average rupture life. Even in well-controlled laboratory conditions, this stochastic nature means that ... -
Validation of the Numerical Simulation of Rotor/Stator Interactions in Aircraft Engine Low-Pressure Compressors
(The American Society of Mechanical Engineers (ASME), 2024)This contribution focuses on the validation of a numerical strategy developed jointly by Safran and Polytechnique Montréal for the simulation and the analysis of blade-tip/casing contact interactions in low-pressure ... -
Dynamic Performance and Control Analysis of a Supercritical CO2 Recuperated Cycle
(The American Society of Mechanical Engineers (ASME), 2024)Supercritical CO2 (sCO2) power cycles represent a promising technology for driving the energy transition. In fact, various research projects around the world are currently studying the possible applications of this technology, ... -
Multidisciplinary Surrogate-Based Optimization of a Compressor Rotor Blade Considering Ice Impact
(The American Society of Mechanical Engineers (ASME), 2024)Ice ingestion can lead to a range of detrimental effects, from diminished engine performance to potentially catastrophic failure, especially for the first compressor stages. As the ice is traveling through the engine, ... -
Residual Stress Optimization for Manufacturing of a Nozzle Guide Vane in Mar-M-509 by Laser Powder Bed Fusion
(The American Society of Mechanical Engineers (ASME), 2024)This paper delves into the potential of additive manufacturing (AM) technologies, focusing on the utilization of laser powder bed fusion (LPBF) to optimize the manufacturing process for Mar-M-509, a cobalt-based superalloy, ... -
A Static/Dynamic Coupled Harmonic Balance Method for Dry Friction Systems Containing Rigid Body Modes
(The American Society of Mechanical Engineers (ASME), 2024)A harmonic balance method for underconstrained dry friction systems containing rigid body modes (HBM-RBM) is proposed. This method aims to overcome the encountered obstacle when applying the harmonic balance method to ... -
Evaluation of Current and Future Aviation Fuels at High-Pressure Rich-Quench-Lean-Type Combustor Conditions
(The American Society of Mechanical Engineers (ASME), 2024)Decarbonizing the aviation sector is one of the biggest challenges to minimize climate change effects associated with carbon dioxide emission. Sustainable aviation fuels will play a major role in this context especially ... -
Numerical Investigation of Two-Phase Shock Waves in CO2 Flows Using a Modified Hertz–Knudsen Model
(The American Society of Mechanical Engineers (ASME), 2024)Understanding the complex behavior of two-phase shocks in CO2 flows is essential for a variety of applications, including carbon capture and storage () and transcritical refrigeration cycles. This study presents a comprehensive ... -
Burner and Flame Transfer Matrices of Jet-Stabilized Flames: Influence of Jet Velocity and Fuel Properties
(The American Society of Mechanical Engineers (ASME), 2024)To achieve the decarbonization of electrical power generation, gas turbines need to be upgraded to combust high-hydrogen content fuels reliably. One of the main challenges in this upgrade is the burner design. A promising ... -
The Effect of Heterogeneous Natural Gas–Hydrogen Input Into F-Class Gas Turbine Combustor As a Combustion Optimization Method
(The American Society of Mechanical Engineers (ASME), 2024)The global push to combat climate change by transitioning to clean power generation is accelerating. One promising avenue involves using hydrogen in place of natural gas in gas turbine-based power plants. While the development ... -
Experimental Study of the Dynamics of Lean Premixed Hydrogen Flames in a Multi Jet Combustor
(The American Society of Mechanical Engineers (ASME), 2024)In this study, the flame dynamics of lean premixed hydrogen jet flames are experimentally investigated. Acoustic and optical measurement devices are used to capture the response of a bundle of jet flames to acoustic forcing. ... -
Centrifugal Compressor Surge in Closed-Loop Systems: Initial Modeling and Comparison With Experiments
(The American Society of Mechanical Engineers (ASME), 2024)Heat pumps are expected to play a primary role in electrification of thermal users in the residential and industrial sectors. Dynamic compressors are widely used in large size heat pumps, thanks to their industrial ... -
Modeling of Metal Matrix Concentrated Solar Receivers for Supercritical Carbon Dioxide Power Blocks
(The American Society of Mechanical Engineers (ASME), 2024)Supercritical carbon dioxide (sCO2) power blocks for concentrating solar power (CSP) with novel metal matrix solar receivers have the potential to reduce operating expenses while improving overall system efficiencies. These ... -
Research on Effect of Endwall Contouring of Vaned Diffuser on Stable Operating Range of Centrifugal Compressor
(The American Society of Mechanical Engineers (ASME), 2024)The study investigates the impact of diverse endwall contouring strategies on the operational stability of a high-pressure ratio centrifugal compressor stage. Employing numerical simulation techniques, this study examines ... -
Large-Eddy Simulation Study of Flow and Combustion Dynamics in a Full-Scale Hydrogen–Air Rotating Detonation Combustor-Stator Integrated System
(The American Society of Mechanical Engineers (ASME), 2024)In the present work, a first-of-its-kind three-dimensional (3D) large-eddy simulation (LES) study is conducted to numerically investigate the combustion dynamics as well as aero-thermal phenomena in a full-scale nonpremixed ...