Abstract: The unsteady flow in axial compressors during prestall and stall inception is often studied using circumferentially distributed pressure sensors. The present investigation utilized a transonic axial compressor facility to ...

Abstract: This paper discusses the application of a novel vibration measurement technique, termed blade image velocimetry (BIV), to a highspeed axial compressor. Measurements of compressor blade vibration can be difficult to obtain ...

Abstract: Nonsynchronous vibration (NSV) in axial compressors can be caused either by (1) unsteady aerodynamic forces that are not related to motion of the blades or (2) motion-dependent aerodynamic forcing (e.g., flutter). Aerodynamic ...

Abstract: Experimental and numerical studies were conducted to investigate tipleakage flow and its relationship to stall in a transonic axial compressor. The computational fluid dynamics (CFD) results were used to identify the ...

Abstract: Numerical investigations were conducted to predict the performance of a transonic axial compressor rotor with circumferential groove casing treatment. The Notre Dame Transonic Axial Compressor (NDTAC) was simulated at ...

Abstract: An advanced casing treatment (CT) design was tested in a single-stage, high-speed axial compressor. The geometry of the casing included bent-axial slots applied near the rotor leading edge. Compressor performance and stall ...

Abstract: The thermodynamic properties of CO2 do not obey the ideal gas law and the simplified equation of state. The enthalpy and sonic speed depend on both temperature and pressure whereas the enthalpy and the speed of sound of ...