YaBeSH Digital Library: Recent submissions
Now showing items 10741-10760 of 316660
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Vaneless Diffuser Modeling for Real Gas Supercritical Carbon Dioxide Flows: Need for a Data-Driven Approach
(The American Society of Mechanical Engineers (ASME), 2024)In this work, a real gas-based vaneless diffuser (VLD) differential equation model is presented. The model requires the specification of the skin friction coefficient as input. However, the use of standard VLD friction ... -
Aerodynamic Study of a Horizontal Axis Wind Turbine in Surge Motion Under Angular Speed and Blade Pitch Controls
(The American Society of Mechanical Engineers (ASME), 2024)Floating offshore wind turbines (FOWTs) experience dynamic conditions due to platform motion, requiring specific control strategies to mitigate loads and promote the wake diffusion improving overall wind farm efficiency. ... -
Tribological Performance of Soft Magnetic Composite Materials for Gas Turbine Applications
(The American Society of Mechanical Engineers (ASME), 2024)Soft magnetic composites (SMCs) have gained attention in the last years of their usage in more compact and powerful electromechanical systems. These materials are used to combine the application of metallic material to the ... -
Computational Fluid Dynamics Modeling of Additively Manufactured Extreme Environment Heat Exchangers for Waste Heat Recuperation
(The American Society of Mechanical Engineers (ASME), 2024)Advanced Brayton cycle-based waste heat recovery (WHR) system for a targeted energy efficiency of 20–50% and gravimetric power densities of 1.6–1.9 kW/kg are attractive propositions for future airplane designs. One of the ... -
Probabilistic Modeling Geometric Tolerance and Low Cycle Fatigue Life of Gas Turbine Compressor Blade
(The American Society of Mechanical Engineers (ASME), 2024)This paper presents a probabilistic low cycle fatigue (LCF) assessment for geometric tolerances on high load contact surfaces of gas turbine compressor blades. The typical patterns of the geometric deviations for the root ... -
Thermodynamic Analysis of Basic and Regenerative Organic Rankine Cycle Configurations Using Six Working Fluids: A Parametric Study With CoolProp in MATLAB
(The American Society of Mechanical Engineers (ASME), 2025)Organic Rankine Cycle (ORC) is a promising solution for reducing the environmental impact of electricity production. It operates with waste heat from industrial processes and uses low and medium-temperature heat sources. ... -
Radial Deflection of Ring-Stiffened Cylinders Under Hydrostatic Pressure
(The American Society of Mechanical Engineers (ASME), 2024)Ring-stiffened cylinders under hydrostatic pressure have been analyzed for more than a century. The contribution of Salerno and Pulos in the fifties of the previous century can be considered as a standard that nowadays ... -
A Large Eddy Simulation Study on Hydrogen Microjets in Hot Vitiated Crossflow
(The American Society of Mechanical Engineers (ASME), 2024)In this paper, the results of a large eddy simulation (LES) study on hydrogen microjets (dj ∼ 0.5 mm) injected into a hot (1600 K) vitiated crossflow at different angles, namely, normal (90 deg) and inclined jet (30 deg), ... -
Model-Based Inference of Flame Transfer Matrices From Acoustic Measurements in an Aero-Engine Test Rig
(The American Society of Mechanical Engineers (ASME), 2024)Flame dynamics, represented as a flame transfer matrix (FTM), is not directly measurable in test rigs and must be deduced from transfer matrix measurements of the combustion system. The burner-flame transfer matrix (BFTM) ... -
A Parametric Study on NOx Emissions From Ammonia Containing Product Gas in Rich–Quench–Lean Combustion
(The American Society of Mechanical Engineers (ASME), 2024)Due to climate change, there has been an increasing demand for fuels that can accelerate the transition away from fossil fuels to clean energy. Humidified product gas obtained from gasifying biomass is emerging as a promising ... -
Aeroelastic Influence of Blade-Shaft Coupling in a 1 1/2-Stage Axial Compressor
(The American Society of Mechanical Engineers (ASME), 2024)The design process of turbomachinery is often constraint by aeroelastic phenomena. The design choices are limited by possible structural failure, which can be caused by high vibration amplitudes. In particular, damping has ... -
Transient Shutdown Cooling Simulation of a Gas Turbine Test Rig Configuration Under Ventilated Natural Convection
(The American Society of Mechanical Engineers (ASME), 2024)A transient simulation of shutdown cooling for a gas turbine test rig configuration under ventilated natural convection has been successfully demonstrated using a coupled aerothermal approach. Large eddy simulation (LES) ... -
Combining Machine Learning, Embedded Sensor Networks and Additive Burner Design for Combustor Structural Health Monitoring
(The American Society of Mechanical Engineers (ASME), 2024)The crystAIr project is about sensitizing burners for flame monitoring based on a discrete number of dynamic pressure sensors and a machine learning approach. The context is the development of better aircraft engines and ... -
Model Predictive Control Strategies for Turbine Electrified Energy Management
(The American Society of Mechanical Engineers (ASME), 2024)The increasing electrification of aircraft propulsion systems is leading to new control architectures being developed to address integration between electric machines (EMs) and gas-based turbine engines. For hybrid-electric ... -
A Low Mach Preconditioned Harmonic Balance Solver for Cavity Flutter Computations
(The American Society of Mechanical Engineers (ASME), 2024)Labyrinth seal flutter is a critical phenomenon in turbomachinery, as it can lead to severe structural vibrations and potential component damage. Accurate prediction and mitigation of flutter are paramount to ensuring the ... -
Development of a Hydrogen Microgas Turbine Combustor: NOx Emissions and Secondary Air Injection
(The American Society of Mechanical Engineers (ASME), 2024)On the way to defossilization, green hydrogen is a promising way to substitute natural gas (NG) and oil in the gas turbine industry. In the scope of the H2mGT project, a microgas turbine (mGT) burner with 100% hydrogen ... -
Techno-Economic Analysis of the Solid Oxide Semiclosed CO2 Cycle for Different Plant Sizes
(The American Society of Mechanical Engineers (ASME), 2024)This work presents a detailed techno-economic evaluation of the solid oxide semiclosed CO2 (SOS-CO2) cycle, a hybrid semiclosed cycle with solid oxide fuel cells (SOFC) developed by Politecnico di Milano. for different ... -
Increasing Efficiency and Reducing Emissions in a Small Displacement Gasoline Engine With Hydrogen-Enriched Natural Gas
(The American Society of Mechanical Engineers (ASME), 2025)There is currently a gap in the available literature on retrofitting engines with less-advanced control systems to run on hydrogen-enriched natural gas. Potential advantages of hydrogen-enriched natural gas in these engines ... -
Development of a Method for Shape Optimization for a Gas Turbine Fuel Injector Design Using Metal-Additive Manufacturing
(The American Society of Mechanical Engineers (ASME), 2024)Adjoint shape optimization has enabled physics-based optimal designs for aerodynamic surfaces. Additive manufacturing (AM) makes it possible to manufacture complex shapes. However, there has been a gap between optimal and ... -
Teaching Aero-Engine Performance: From Analytics to Hands-On Exercises Using Gas Turbine Performance Software
(The American Society of Mechanical Engineers (ASME), 2024)In this paper, we present an approach for teaching turbojet engine performance that combines mathematical analysis with the use of performance software to provide students with a comprehensive and in-depth understanding ...