YaBeSH Digital Library: Recent submissions
Now showing items 2181-2200 of 316660
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Comparative Analysis of Pre- and Post-Catalyst Exhaust Gas Recirculation Systems for Turbocharged Spark-Ignition Engines
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. Low-pressure exhaust gas recirculation (LP-EGR) systems are widely used in current spark-ignition engines due to benefits in knock control, heat transfer losses, and pumping work. Usually, the gases are extracted ... -
On the Mechanism of Unsteady Tip Flow Occurrence in a Transonic Fan
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. The tip clearance flow, closely related to stable margin and efficiency, influences the performance of the fan/compressor in aeroengines. The unsteady tip flow in a high-speed transonic fan rotor is studied by ... -
An Aeroengine Internal Field Prediction Method Based on Principal Orthogonal Decomposition Dimensionality Reduction Integrated With Machine Learning
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. To overcome the limitations of one-dimensional calculation and achieve rapid prediction of internal fields in aeroengines, this study adopts a method combining proper orthogonal decomposition and machine learning. ... -
Zonal Hybrid RANS-LES Simulation of a 1.5-Stage Turbine
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. This article introduces a novel method to conduct zonal hybrid RANS-large eddy simulations (LES) of turbomachinery configurations and demonstrates its application to a 1.5-stage turbine. The method extends the ... -
Preliminary Design of Integrated Power and Thermal Management Systems for Hybrid Electric VTOL Aircraft Architecture
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. Hybrid and fully electric vertical takeoff and landing (VTOL) aircraft present promising solutions to improve urban traffic congestion but face challenges such as limited power and energy density and stringent ... -
Fluidic Oscillators in Impingement Jet Cooling: A Novel Configuration for Realizing Sweeping Jets
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. This study examines integrating fluidic oscillators into a multi-jet impingement cooling system for turbomachinery, aiming to enhance heat transfer while reducing coolant requirements. The investigated configuration ... -
Dynamic Characterization of Annular Gas Seals With Additively Manufactured Textured Patterns
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. This paper presents experimental results on the leakage and rotordynamic performance of 3D-printed annular damper seals configured with diamond patterns. Textured seals, such as hole-pattern (HP) stator seals, ... -
A Multi-Scale Representation of Turbulence Generation in Compressor Flows
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. Turbomachinery flows exhibit strong unsteadiness, characterized by periodic wake-related disturbances superimposed on background turbulence. The turbulence generation mechanisms in these flows involve multiple ... -
An Exception Algorithm to Ease Convergence in Multistage Turbomachinery Throughflow Calculations
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. Iterative solvers used in turbomachinery, spanning throughflow formulations and higher-order computational fluid dynamics (CFD), depend critically on how they are initialized. The starting state determines not ... -
A Novel Measurement Method for Investigating the Lift-Off Behavior of Gas Polymer Bearings
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. Gas polymer bearings (GPBs) are innovative machine elements for supporting high-speed rotors in oil-free turbomachinery applications. By using air as the lubricating medium, GPBs operate without contamination ... -
Rotordynamic Characteristics for a Tooth-On-Rotor Long Labyrinth Seal Using Computational Fluid Dynamics
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. The paper compares experimentally derived dynamic force coefficients for a tooth on rotor (TOR) labyrinth seal (LS) against predictions obtained from URANS (Unsteady Reynolds Averaged Navier–Stokes) computational ... -
Three-Dimensional Flow Field Characterization and Blockage Effects in an Open-Jet Probe Calibration Wind Tunnel
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. This article presents a detailed investigation into the 3-D flow field characterization and blockage effects in an open-jet probe calibration wind tunnel, utilizing a wide array of advanced measurement techniques. ... -
Performance Test of a 9 MW-Class Three-Stage Axial CO2 Compressor
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. Performance testing of a three-stage 9 MW axial CO2 compressor has been successfully completed at the closed-loop CO2 compressor test facility at the University of Notre Dame. The design speed, inlet pressure, ... -
Analysis of Radial Inlet Distortion on Transonic Fan Performance
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. Improving fan design and performance prediction requires an understanding of the impacts of inlet distortion. Using full-annulus unsteady Reynolds-averaged Navier–Stokes (URANS) simulations, the effects of hub ... -
Effect of Bismuth Addition to SAC305 on the Microstructure and Mechanical Properties of Solder Joints
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. Two types of solder alloys—96.5Sn-3.0Ag-0.5Cu (SAC305) and SAC305 with the addition of 3.3% bismuth (Cyclomax)—are thermally aged, and their comparison is carried out in terms of solder joint microstructure and ... -
Analysis of Blade Tip Timing Data From Nonuniformly Spaced Sensors by Discrete Wavelet Transform
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. A major drawback of the blade tip timing (BTT) method is its inherent undersampling of the vibration data. The consequence of this characteristic is that the spectrograms computed using these data are very difficult ... -
The Adverse Effect of Pre-Swirl on Ingestion in a Downstream Cavity
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. Gas turbine designers demand accurate predictions of metal temperature to ensure acceptable operating life of components experiencing high thermal stress. Rotor–stator cavities ingest hot mainstream gas through ... -
Impact of Fuel Conditioning and Combustor Injection Temperature on a Hydrogen Turboprop
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. Reducing aviation emissions demands revolutionary propulsive technologies, and gaseous hydrogen (H2) combustion offers high potential. However, using this fuel in aero engines requires complex fuel conditioning ... -
Investigation of Ash Deposition Behavior From Biogenic Solid Fuel Under Gas Turbine Conditions With Film Cooling
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. In the current state of technology, gas turbines operate mainly with fossil fuels. In order to achieve a sustainable energy supply with gas turbines, alternative fuels have to be used. In the past, many attempts ... -
Long-Term Lifetime Validation of Hot Turbine Guide Vanes Manufactured by Laser Powder Bed Fusion
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. The advent of additive manufacturing (AM), specifically laser powder bed fusion (LPBF), has revolutionized the production of gas turbine components. This paper presents a comprehensive study on the application ...