Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 781-800 of 9564
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Quasi-One-Dimensional Loss Model of Volute Using Boundary Layer Approach for Inward Flow Radial Supercritical CO2 Turbines
(The American Society of Mechanical Engineers (ASME), 2023)Inward flow radial sCO2 turbines operate at considerably higher speeds than conventional gas or steam turbines making only the low specific speed designs practically realizable. Low-specific speed designs suffer from ... -
Damping and Stiffness Mistuning Effects in a Bladed Disk With Varied Disk Coupling
(The American Society of Mechanical Engineers (ASME), 2023)Component mode mistuning (CMM) is a well-known, well documented reduced order modeling technique that effectively models small variations in blade-to-blade stiffness for bladed disks. In practice, bladed disks always have ... -
Dynamic Characterization of an Adaptive Film-Riding Seal
(The American Society of Mechanical Engineers (ASME), 2023)Shaft seals control the leakage of fluid between areas of high pressure and low pressure around rotating components inside turbomachinery. Static seals are often subject to damaging rubs with the shaft, caused by assembly ... -
Performance Investigation of Stator-Less and Blade-Less Radial Expander
(The American Society of Mechanical Engineers (ASME), 2023)Interests in small-scale turbomachinery are gaining momentum, particularly around waste heat recovery using Organic Rankine Cycle (ORC), energy harvesting, pico-hydro, refrigeration and heat pumps and small-scale power ... -
Open NASA Blade Models for Nonlinear Dynamics Simulations
(The American Society of Mechanical Engineers (ASME), 2023)This contribution presents a catalogue of open turbomachinery blade models dedicated to nonlinear dynamics simulations. Based on a specifically developed in-house computer code, three-dimensional computer-aided design (CAD) ... -
Calculation of Thermodynamic Wetness Loss in Steam Turbines Using Computational Fluid Dynamics Simulation
(The American Society of Mechanical Engineers (ASME), 2023)In the paper, the behavior of wet steam flow is described in three different steam turbines. The first one is the 1100 MW turbine in the nuclear power plant with the pressurized water reactor. The second one is the 660 MW ... -
Effect of Centrifugal Force of Gas Film on the Load Capacity of Thrust Gas Bearing
(The American Society of Mechanical Engineers (ASME), 2023)A modified Reynolds equation including centrifugal force of gas film was derived, and it was used to study the effect of gas film centrifugal force and associated streamline on the load capacity of both rigid and foil ... -
The Manufacturing and Experimental Validation of a Nickel Superalloy Double-Wall, Effusion Test Specimen
(The American Society of Mechanical Engineers (ASME), 2023)With the hot stage of a modern aeroengine operating with combustor firing temperatures well beyond the melting point of the nickel superalloys from which the turbine blades are manufactured, developments to the methods of ... -
Errata: “Off-Design Modeling and Operational Optimization of Trans-Critical Carbon Dioxide Heat Pumps” [ASME J. Eng. Gas Turbines Power, 2022, 144(10), p. 101004]
(The American Society of Mechanical Engineers (ASME), 8/31/2023 ) -
Erratum: “Dynamical Characterization of Thermoacoustic Oscillations in a Hydrogen-Enriched Partially Premixed Swirl-Stabilized Methane/Air Combustor” [ASME J. Eng. Gas Turbines Power, 143(12), p. 121022; DOI: 10.1115/1.4052091]
(The American Society of Mechanical Engineers (ASME), 8/1/2023 1)The following are the changes made to the original paper:1. Section 2 (Experimental setup) Last paragraph third sentence -For each combination of thermal load and equivalence ratio, the fraction of hydrogen in the fuel was ... -
Aerodynamic Noise Characteristics of Axial Flow Fan in Narrow Space and Noise Reduction Based on Flow Control
(The American Society of Mechanical Engineers (ASME), 8/31/2023 )The aeroacoustic characteristics of a power module in the electric vehicle charging pile is studied by experimental and numerical methods. In the free field, a single cooling fan mainly emits tonal noise, while the far-field ... -
Exploring the Oxy-Fuel Combustion in Spark-Ignition Engines for Future Clean Powerplants
(The American Society of Mechanical Engineers (ASME), 8/31/2023 )In the context of the CO2 challenge, oxy-fuel combustion in internal combustion engines (OFC-ICE) arises as a promising technology for carbon capture and almost zero-NOx solutions. Although the literature shows some ... -
An Experimental Comparison of Cyclic Variations in Diesel–Natural Gas and POMDME–Natural Gas Dual Fuel Combustion
(The American Society of Mechanical Engineers (ASME), 8/31/2023 )Cyclic variations in internal combustion engines are caused by various factors, including combustion mixture stratification, in-cylinder flows, local fluctuations in air-fuel ratio, etc. Cyclic variations have a profound ... -
A Correction Method for the Effects of Reynolds Number, Roughness, and Tip Clearance on Geometric Scaling of Axial Compressors
(The American Society of Mechanical Engineers (ASME), 8/31/2023 )The geometric scaling method is often used in the design and development of axial compressors to reduce high costs. However, Reynolds number, surface roughness, and tip clearance are often difficult to satisfy all the ... -
Blade Strain Peak Localization Method With Single Transducer During Multimode Vibration
(The American Society of Mechanical Engineers (ASME), 8/31/2023 )The dynamic strain/stress measurement of blades provides an effective method to anticipate fatigue life and investigate of failure causes. Unlike the blade strain peak is fixed during singlemode, which can be measured by ... -
Control-Oriented Reduced-Order Modeling of Conversion Efficiency in Dual-Layer Washcoat Catalysts With Accumulation and Oxidation Functions
(The American Society of Mechanical Engineers (ASME), 8/1/2023 1)This work proposes a model for predicting conversion efficiency in multifunctional catalysts with dual-layer washcoat. The mass transfer is more relevant in these devices than in single-layer washcoats due to additional ... -
Design Optimization of an Ethanol Heavy-Duty Engine Using Design of Experiments and Bayesian Optimization
(The American Society of Mechanical Engineers (ASME), 8/1/2023 1)Diesel-fueled engines still hold a large market share in the medium and heavy-duty transportation sector. However, the increase in fossil fuel prices and the strict emission regulations are leading engine manufacturers to ... -
Condition Monitoring of Wind Turbines Based on Anomaly Detection Using Deep Support Vector Data Description
(The American Society of Mechanical Engineers (ASME), 7/27/2023 )Wind turbine condition monitoring is considered a key task in the wind power industry. A plethora of methodologies based on machine learning have been proposed for monitoring wind turbines, but the absence of faulty data ... -
Accelerating Chemical Kinetics Calculations With Physics Informed Neural Networks
(The American Society of Mechanical Engineers (ASME), 7/27/2023 )Detailed chemical kinetics calculations can be very computationally expensive, and so various approaches have been used to speed up combustion calculations. Deep neural networks (DNNs) are one promising approach that has ... -
Evaluation of Turbine Tip Clearance With Performance Degradation Using Multilayer Perceptron
(The American Society of Mechanical Engineers (ASME), 7/27/2023 )This paper developed a process for turbine tip clearance prediction and control considering performance degradation to address the contradiction between computational efficiency and computational accuracy. The developed ...