Journal of Turbomachinery: Recent submissions
Now showing items 41-60 of 4312
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Wake–Separation Bubble Interaction Over an Experimentally Simulated Axial Compressor Blade Under Low Reynolds Number Flow
(The American Society of Mechanical Engineers (ASME), 2025)For the most part, the flow over an axial compressor blade is subjected to adverse pressure gradients. Under low Reynolds number conditions, the flow could separate off the blade surface especially on the suction side, ... -
Reassessment of the Conventional: Numerical Validation of a One-Dimensional Model for the Prediction of Volute Losses
(The American Society of Mechanical Engineers (ASME), 2025)The flow inside the volute of a centrifugal compressor is complex and three-dimensional. The fluid follows a swirling flow pattern, and under many operating conditions, the flow quantities are highly inhomogeneous in radial ... -
Analysis of the Instantaneous Film Cooling Effectiveness on Showerhead Film Cooling Using Fast Response Pressure Sensitive Paint
(The American Society of Mechanical Engineers (ASME), 2025)The instantaneous effect of unsteady wakes on film cooling effectiveness using a fast response pressure sensitive paint was studied. Testing was performed in a five-passage, low-speed wind tunnel using five times scaled ... -
Effect of Leading Edge Erosion on the Tip Leakage Flow in a Compressor Cascade
(The American Society of Mechanical Engineers (ASME), 2025)The interaction between tip leakage flow and passage flow in axial compressor blade rows creates complex flow mechanisms that impair flow stability. Caused by erosion of the compressor blades, these flow mechanisms become ... -
Roughness Investigations on In-Service High-Pressure Compressor Blades—Part I: An Automated Process for High-Fidelity Roughness Measurements
(The American Society of Mechanical Engineers (ASME), 2025)The two-part publication deals with roughness investigations on in-service high-pressure compressor (HPC) blades, both in terms of measurements and simulations. In this article (Part I), an automated process for performing ... -
Unsteady Flow Mechanism of Impeller Stall Inception in a High-Pressure Ratio Centrifugal Compressor With Bleed Slots
(The American Society of Mechanical Engineers (ASME), 2024)The impeller stall inception in a high-pressure ratio centrifugal compressor with bleed slots was investigated by experiments and unsteady numerical analysis. This study reported that the flow instability of the internal ... -
Numerical Simulations and Sensitivity Analysis of Ice Formation on Fan Blades
(The American Society of Mechanical Engineers (ASME), 2024)In-flight icing, the formation of ice during flight, poses risks to the safety and reliability of aircraft. Due to environmental conditions, ice accumulation occurs on the low-pressure compressor blades of an engine, ... -
Innovative Cavity Modeling for Centrifugal Compressors Aeromechanical Analysis
(The American Society of Mechanical Engineers (ASME), 2024)Centrifugal compressor aeromechanics is playing an increasingly important role in the energy transition scenario, especially when operating with low-molecular-weight gases, such as hydrogen. For these machines, maximum ... -
A Simplified Injection Model for Variable Area Turbine Fluidic Throttling
(The American Society of Mechanical Engineers (ASME), 2024)Previous studies have demonstrated the effectiveness of using fluidic actuators to throttle the flow through a nozzle guide vane, enabling a variable area turbine (VAT) with no moving parts. A simplified model was developed ... -
Biot Number Error in Low-Temperature Inconel Overall Effectiveness Experiments
(The American Society of Mechanical Engineers (ASME), 2025)To predict the performance of turbine materials at engine conditions, experiments are often performed at low-temperature laboratory conditions. In order to ensure the low-temperature, laboratory results accurately predict ... -
Acoustic Modes in an Open Box Cavity With Variable Depth Using Two Distinct Wind Tunnels
(The American Society of Mechanical Engineers (ASME), 2025)Cavity resonances in ducts are a classical problem that has involved researchers from very different fields over time. More recently, the aerospace community became engaged again due to resonances found within the flow ... -
GPU-Accelerated Full-Wheel Large-Eddy Simulations of a Transonic Fan Stage
(The American Society of Mechanical Engineers (ASME), 2025)A single-stage transonic axial-flow fan is simulated using graphic processing unit (GPU)-accelerated wall-modeled large-eddy simulations. The computational meshes are generated using Voronoi diagram-based approach. Two ... -
The Impact of Inflow Unsteadiness on Loss Prediction
(The American Society of Mechanical Engineers (ASME), 2024)Stagnation pressure loss coefficient is still the most commonly used loss metric for performance evaluation and is routinely used to validate simulations. This is because it is easy to measure and readily available from ... -
Development of an Additively Manufactured Stationary Diffusion System for a Research Aeroengine Centrifugal Compressor
(The American Society of Mechanical Engineers (ASME), 2024)This paper introduces the next generation of the Centrifugal Stage for Aerodynamic Research (CSTAR) facility at the Purdue University Compressor Research Lab. The research centrifugal compressor is designed with an additively ... -
Lessons Learned From Pandemic-Driven Remote Learning and Sustaining Best Practices in Turbomachinery Laboratory Experiences
(The American Society of Mechanical Engineers (ASME), 2024)As online educational experiences have become more common for students to engage with while earning an engineering degree, instructors must become more attuned to best practices in digital pedagogies for all courses, ... -
Influence of Propagation Velocity and Peak Pressure of the Rotating Pressure Wave on the Flow Characteristics of a Centrifugal Compressor
(The American Society of Mechanical Engineers (ASME), 2025)Rotating detonation turbine engine represents an innovative advancement in the state-of-art gas turbines. When a rotating detonation combustor is coupled with turbomachinery, the rotating detonation wave propagates upstream ... -
Influences of Particulate Deposition on Vane Trailing-Edge Film Cooling: Adiabatic and Overall Cooling Effectiveness
(The American Society of Mechanical Engineers (ASME), 2025)Thermal design for the trailing edge of a turbine vane is critically challenging because the thinnest trailing-edge region has a low-thermal capacity, resulting in a much quicker thermal response to the hot gas. Cooling ... -
Experimental Study on Controlling Flow Separation of Compressor Cascades With Self-Excited Sweeping Jet Actuator
(The American Society of Mechanical Engineers (ASME), 2025)The sweeping jet actuator (SJA), widely studied as a potential flow control method in compressors and turbines, results in unnecessary performance losses due to its requirement for additional energy and mass input. In this ... -
Design and Analysis of a Liftfan for eVTOL Aircraft
(The American Society of Mechanical Engineers (ASME), 2025)Ducted liftfans provide greater hovering efficiency to electric vertical take-off and landing aircraft than open propellers of equal disk area. Liftfans are designed with minimized length to limit propulsor weight added ... -
Unsteadiness in the Secondary Flows of a High-Speed Low-Pressure Turbine Cascade With Unsteady Wakes and Purge Flow
(The American Society of Mechanical Engineers (ASME), 2025)This work investigates the unsteady interactions between incoming wakes and purge flow in a high-speed low-pressure turbine cascade tested under engine-representative conditions. Experiments were conducted in a linear ...