YaBeSH Digital Library: Recent submissions
Now showing items 13861-13880 of 316660
-
Influence of Thermal Gradients and Arctic Temperatures on the Mechanical Properties and Fracture Behavior of Woven Carbon and Woven Kevlar® Composites
(The American Society of Mechanical Engineers (ASME), 2024)This study investigates the impact of thermal gradients (−60/23 °C), arctic temperature (−60 °C), and room temperature (23 °C) on the tensile and flexural properties of woven carbon and Kevlar® fiber-reinforced polymer ... -
Compact Heat Exchangers With Curved Fins for Hydrogen Turbofan Intercooling
(The American Society of Mechanical Engineers (ASME), 2024)Hydrogen is being considered as a possible path toward carbon-neutral aviation. There are additional advantages besides its main benefit of CO2-free combustion. One application is to use it for aero engine heat management ... -
A Dynamic Testing Approach for Particulate Erosion–Corrosion for Gas Turbine Coatings
(The American Society of Mechanical Engineers (ASME), 2024)Particle interactions in engines can be complex phenomena leading to degradation of thermal (TBCs) and environmental barrier coatings (EBCs) meant to protect engine components. Ingestion of particles into the engine can ... -
Validation of Thermal History Coating Technology on Two Stage-One Turbine Blades
(The American Society of Mechanical Engineers (ASME), 2024)Small and midsize gas turbines for distributed power generation have been widely used in recent years, with designers constantly seeking to improve efficiency by increasing operating temperatures. Therefore, accurate thermal ... -
A Preconditioner-Based Data-Driven Polynomial Expansion Method: Application to Compressor Blade With Leading Edge Uncertainty
(The American Society of Mechanical Engineers (ASME), 2024)In engineering practice, the amount of measured data is often scarce and limited, posing a challenge in uncertainty quantification (UQ) and propagation. Data-driven polynomial chaos (DDPC) is an effective way to tackle ... -
Numerical Investigation on the Influence of Continuous Rotating Backpropagation Pressure Wave on Turbine Performance
(The American Society of Mechanical Engineers (ASME), 2024)Researches have shown that the use of a continuous detonation afterburner can improve the propulsion performance of aero engine. However, backpropagation pressure waves (BPW) generated by the pressure gain of detonation ... -
Using Machine Learning Tools for Rotating Stall Warning in a Contra-Rotating Compressor
(The American Society of Mechanical Engineers (ASME), 2024)This paper takes a low-speed axial contra-rotating compressor as the experimental object, and the sensor array is used to collect the pressure sequences in stall conditions for different speed configurations. These pressure ... -
Combustion and Emission Characteristics of an Ammonia Microgas Turbine Combustor With a Twin-Fluid Atomizer
(The American Society of Mechanical Engineers (ASME), 2024)In this study, combustion and emission characteristics in the test rig of microgas turbine with liquid ammonia fuel injection using the twin-fluid atomizers (TFAs) are investigated and compared with the previous result ... -
On the Performance of Variable-Geometry Ducted E-Fans
(The American Society of Mechanical Engineers (ASME), 2024)Electrically driven ducted fans (e-fans), either underwing-mounted or located at the aft-fuselage, can potentially improve the system overall efficiency in hybrid-electric propulsion architectures by increasing their thrust ... -
Modeling and Experimental Validation of Prechamber Jet Penetration Considering Jet Density and Ejection Pressure Variations
(The American Society of Mechanical Engineers (ASME), 2024)Although prechamber (PC) is regarded as a promising solution to enhance ignition in lean-burn gas engines, a lack of comprehensive understanding of PC jet penetration dynamics remains. This study proposed a zero-dimensional ... -
Experimental and Numerical Investigation of Dynamic Vibration Absorber Array for Vibration Mitigation of Integral Blisk
(The American Society of Mechanical Engineers (ASME), 2024)Dynamic vibration absorber array (DVAA) is a promising technique for vibration mitigation of integral blisk. In this paper, the effectiveness of the DVAA method is experimentally validated on a piezoelectric actuators-driven ... -
Solid-State LiDAR With Optimized Dynamic Beam Power Intensity for Reduced Thermal Load
(The American Society of Mechanical Engineers (ASME), 2024)Next generation sensor systems for automated vehicle navigation are likely to include light detection and ranging (LiDAR) sensors. Solid-state LiDAR technology that eliminates all mechanically moving parts is expected to ... -
Prediction of Soot in a Rich–Quench–Lean Burner Using a Semidetailed JetA-1 Chemistry
(The American Society of Mechanical Engineers (ASME), 2024)This work proposes a methodology to include accurate kinetics for soot modeling taking into account real fuel complexity in large eddy simulation (LES) of aeronautical engines at a reasonable computational cost. The ... -
Thermodynamic Optimization of Load-Following Operation in a Decarbonized Combined Cycle Power Plant Under Net-Zero Scenarios
(The American Society of Mechanical Engineers (ASME), 2024)Postcombustion capture (PCC) by means of mono-ethanolamine and hydrogen co-firing, combined with exhaust gas recirculation (EGR), were applied to a typical 2 × 1 combined cycle (CC) with the goal of reaching net-zero CO2 ... -
Local Surrogate Modeling for Spatial Emulation of Gas-Turbine Combustion Via Similarity-Based Sample Processing
(The American Society of Mechanical Engineers (ASME), 2024)This work proposes an accurate and efficient surrogate modeling method for predicting combustion field in a gas-turbine combustor. The method integrates proper orthogonal decomposition-based dimensional reduction, and ... -
Swirler Design Parameter Impact on Lean Blowout, Pressure Loss, and Flame Liftoff
(The American Society of Mechanical Engineers (ASME), 2024)Swirl stabilized combustion is a common technique used in gas turbine engine combustors and is accomplished by introducing swirl into the inlet flow, which enhances mixing and stabilizes the combustion event. Coaxial ... -
Off-Equilibrium Linearization-Based Control of Nonlinear Time-Delay System and Application to a Turbofan Engine
(The American Society of Mechanical Engineers (ASME), 2024)Turbofan engines exhibit pronounced nonlinearity due to component characteristics and thermal processes, necessitating linearization to connect engine control with linear control theory. Off-equilibrium linearization offers ... -
Numerical Investigations of Flows and Heat Transfer in Turbine Disk Cavities
(The American Society of Mechanical Engineers (ASME), 2024)In gas turbines, the stator wells play a key role in the efficiency of the turbomachine. The research for performance gains requires a good understanding and an accurate modeling of the flows and heat transfers occurring ... -
Dynamic Modeling and Experimental Modal Analysis for the Central Rod-Fastened Rotor With Hirth Couplings Based on Fractal Contact Theory
(The American Society of Mechanical Engineers (ASME), 2024)The central rod-fastened rotor of gas turbine exhibits pronounced noncontinuous characteristics due to the large number of contact interfaces between the compressor and turbine disks. It is necessary to establish an accurate ... -
Characteristics of Laminar Separation Bubble With Varying Leading-Edge Shapes and Deflections of the Trailing-Edge Flap
(The American Society of Mechanical Engineers (ASME), 2024)A series of implicit large eddy simulations (ILES) is carried out to examine the characteristics of a leading edge (LE) separation bubble. The test case comprises a flat plate with an elliptic leading edge (ELE), which is ...