YaBeSH Digital Library: Recent submissions
Now showing items 11681-11700 of 316660
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Development of Heat Exchanger Modeling Capability for a Finite-Volume Aeroelasticity Solver
(The American Society of Mechanical Engineers (ASME), 2025)Heat exchangers are frequently used in aero-engines and are known to significantly affect the surrounding steady and unsteady flow. In certain applications, they may thereby also influence the aeroelastic stability of ... -
Dynamic Response of a Pivot-Mounted Squeeze Film Damper: Measurements and Predictions
(The American Society of Mechanical Engineers (ASME), 2025)Squeeze film dampers (SFDs) are widely used to reduce vibration levels in rotating equipment. These devices are installed in series with bearings and are subjected to precessional motions with the inner and outer damper ... -
Advanced Methods for Assessing Flow Physics of the TU Darmstadt Compressor Stage: Uncertainty Quantification of RANS Turbulence Modeling
(The American Society of Mechanical Engineers (ASME), 2025)In this paper, we quantify the turbulence modeling uncertainty for the transonic Technische Universität Darmstadt (TUDa) compressor. The present work applies the Eigenspace Perturbation Framework (EPF) as it is the only ... -
Evaluating Thin-Film Thermocouple Performance on Additively Manufactured Turbine Airfoils
(The American Society of Mechanical Engineers (ASME), 2024)As gas turbine engine designs continue to target higher turbine entry temperatures for increased thermal efficiency, gas turbine manufacturers and operators require additional feedback from life-limited engine components. ... -
Targeting Full-Hydrogen Operation on Industrial-Scale Gas Turbines: Impact of Unconventional Fuels on Turbine Module Performance and Aeromechanics
(The American Society of Mechanical Engineers (ASME), 2024)With the trend to full decarbonization, a full-hydrogen economy development is a key industrial objective. Gas turbines, currently one of the cleanest fossil fuel-based power generation solutions, provide reliable and ... -
Flow and Heat Transfer in Rotating Compressor Cavities With Inverted Shroud-Throughflow Temperature Differences
(The American Society of Mechanical Engineers (ASME), 2024)In an aero-engine compressor, co-rotating discs form cavities that interact with an axial throughflow of secondary air at low radius. In the high-pressure (HP) compressor the shroud is hotter than the throughflow (directed ... -
Large Eddy Simulation of an Open Fan Blade at Full-Scale Reynolds Number
(The American Society of Mechanical Engineers (ASME), 2024)Large-scale commercial turbofan designs are typically evaluated early in the technology maturation phase through subscale rig tests, while evaluations at full scale can only feasibly occur much later in a given engine ... -
The Cooling Effect of Combustor Exit Louver Scheme on a Transonic Nozzle Guide Vane Endwall
(The American Society of Mechanical Engineers (ASME), 2024)The ever-increasing combustor exit temperature in modern turbine engine designs raises cooling challenges for the nozzle guide vane (NGV). Due to the complexity of NGV cooling design, the cooling effect from the upstream ... -
Multirow Film-Cooling Effectiveness of Vertically Oriented Slot Cross-Section Diffusion Holes on a Turbine Nozzle Guide Vane Suction Surface
(The American Society of Mechanical Engineers (ASME), 2024)In this article, a multirow film-cooling effectiveness experiment was conducted on a turbine nozzle guide vane suction surface using the pressure-sensitive paint (PSP) measurement technique. Five rows of film holes were ... -
Scale Cooling—A Novel Fractal Cooling Structure for Turbine Vanes
(The American Society of Mechanical Engineers (ASME), 2024)Additive manufacturing technology provides the possibility of more efficient turbine cooling structures. In this work, a novel structure for turbine air-cooled vane based on fractal structure, named scale cooling structure, ... -
Robust Design Optimization of a Compressor Rotor Using Recursive Cokriging Based Multi-Fidelity Uncertainty Quantification and Multi-Fidelity Optimization
(The American Society of Mechanical Engineers (ASME), 2024)This work focuses on the application of multi-fidelity methods for the robust design optimization of engine components. The robust design optimization approach yields geometric designs that have high efficiencies and are ... -
Effects of Localized Non-Gaussian Roughness on High-Pressure Turbine Aerothermal Performance: Convective Heat Transfer, Skin Friction, and the Reynolds’ Analogy
(The American Society of Mechanical Engineers (ASME), 2024)Compressible direct numerical simulations are conducted to investigate how surface roughness affects the aerothermal performance of a high-pressure turbine vane operating at an exit Reynolds number of 0.59 ×106 and exit ... -
Shape Optimization of an Industrial Aeroengine Combustor to Reduce Thermoacoustic Instability
(The American Society of Mechanical Engineers (ASME), 2025)We parameterize the geometry of an industrial aeroengine combustor using free-form deformation (FFD). We then define the thermoacoustic system parameters and impose the acoustic boundary conditions to calculate the ... -
On Intake–Compressor Interactions Within an Integrated Propulsion System
(The American Society of Mechanical Engineers (ASME), 2024)The integration of a propulsion system into the airframe can contribute to the overall aircraft performance and is beneficial for military applications due to a reduction of the aircraft radar cross section. On the other ... -
Enhancing Total Temperature Measurement Accuracy: Calibration Procedures and Novel Two-Wire Probes
(The American Society of Mechanical Engineers (ASME), 2024)Total temperature measurement with thermocouple probes suffers from errors due to heat transfer effects. Two dominant sources of errors are convection and conduction between the thermocouple, the support, and the flow. ... -
The Development of Machine Learning Models for Radial Compressor Monitoring With Instability Detection
(The American Society of Mechanical Engineers (ASME), 2024)Modern radial compressors are designed to operate with high performance and a wide range of applications while minimizing their environmental impact. It is necessary to study the machine near the stability limit and gain ... -
Film-Cooling Performance Comparison of Blade Tips With a Trailing Edge, Pressure Side Cutback, or a Suction Side Squealer in a Transonic Linear Cascade
(The American Society of Mechanical Engineers (ASME), 2024)Film-cooling effectiveness and leakage flow play crucial roles in turbine blade heat transfer. In contrast to the conventional trailing edge cutback squealer blade tip (CB tip), this study aims to compare the film-cooling ... -
Geometric and Flow Characterization of Additively Manufactured Turbine Blades With Drilled Film Cooling Holes
(The American Society of Mechanical Engineers (ASME), 2024)As designers investigate new cooling technologies to advance future gas turbine engines, manufacturing methods that are fast and accurate are needed. Additive manufacturing facilitates the rapid prototyping of parts at a ... -
Conceptual Analysis on the Impact of Acoustic Liners in Fan Flutter
(The American Society of Mechanical Engineers (ASME), 2024)This work investigates the impact of acoustically treated intakes on fan flutter. The propagation of the fan acoustic perturbations is studied using a simplified model, where the frequency of the waves in the intake is the ... -
Phantom Cooling Effects on Rotor Blade Surface Heat Flux in a Transonic Full Scale 1 + 1/2 Stage Rotating Turbine
(The American Society of Mechanical Engineers (ASME), 2024)An experimental and numerical investigation of phantom cooling effects on cooled and uncooled rotating high pressure turbine blades in a full scale 1 + 1/2 stage turbine test is presented. Objectives set to capture, separate, ...