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RISRadial Migration of Shed Vortices in a Transonic Rotor Following a Wake Generator: A Comparison Between Time Accurate and Average Passage Approaches
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper shows a comparison of an unsteady simulation using turbo and an average passage simulation for a two blade row configuration consisting of a wake generator followed by a transonic ...
Particle Image Velocimetry Analysis on the Effect of Stator Loading on Transonic Blade-Row Interactions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Experiments were performed to investigate interactions between a loaded stator and transonic rotor. The blade row interaction (BRI) rig was used to simulate an embedded transonic fan stage with ...
High-Fidelity Numerical Analysis of Per-Rev-Type Inlet Distortion Transfer in Multistage Fans—Part I: Simulations With Selected Blade Rows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Demands for improved performance and operability of advanced propulsion systems require an understanding of the physics of inlet flow distortion transfer and generation and the subsequent engine ...
Investigation of Loss Generation in an Embedded Transonic Fan Stage at Several Gaps Using High-Fidelity, Time-Accurate Computational Fluid Dynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The blade-row interaction (BRI) rig at the Air Force Research Laboratory, Compressor Aero Research Laboratory, has been simulated at three axial gaps between the highly loaded upstream stator ...
High-Fidelity Numerical Analysis of Per-Rev-Type Inlet Distortion Transfer in Multistage Fans—Part II: Entire Component Simulation and Investigation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Part I of this paper validated the ability of the unsteady Reynolds-Averaged Navier-Stokes (RANS) solver PTURBO to accurately simulate distortion transfer and generation through selected blade ...
Stator-Rotor Interactions in a Transonic Compressor— Part 1: Effect of Blade-Row Spacing on Performance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Usually less axial spacing between the blade rows of an axial flow compressor is associated with improved efficiency. However, mass flow rate, pressure ratio, and efficiency all decreased as ...
Stator-Rotor Interactions in a Transonic Compressor—Part 2: Description of a Loss-Producing Mechanism
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A previously unidentified loss producing mechanism resulting from the interaction of a transonic rotor blade row with an upstream stator blade row is described. This additional loss occurs only ...
An Investigation of Wake-Shock Interactions in a Transonic Compressor With Digital Particle Image Velocimetry and Time-Accurate Computational Fluid Dynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effects of varying axial gap on the unsteady flow field between the stator and rotor of a transonic compressor stage are important because they can result in significant changes in stage ...