Session: 31-06 Tandem Design

Paper Number: 128776

128776 - Experimental Characterization of Very High Turning Single and Tandem Compressor Profiles 

The axial compressor front stages of the forthcoming aircraft engines architectures will operate at high subsonic inlet Mach numbers over a large range of incidence angles, while providing unprecedented turning levels. In this study, a single vane profile and a tandem vane configuration, designed for identical inlet flow conditions and for a design turning in the excess of 45 degrees, have been experimentally assessed in a linear cascade arrangement.

The present paper outlines first the aerodynamic design philosophy for the tested profiles. Then, the design of the facility and of the test section are presented in view of the challenges imposed for the performance evaluation of very high turning compressor cascades at engine-like conditions. The instrumentation is also presented, and finally, the performance comparison of each blade configuration is given and put into perspective with the measurement uncertainty.

The analysis of the blade sets performance aims to highlight the advantages and drawback of each configuration. The use of both the experimental data and CFD computations helps to provide and insight into the loss driving mechanisms. The comparison between the two tested profiles demonstrates how the tandem configuration, with a reduced solidity, operates at similar loss levels over a large part of the tested incidence range.

Presenting Author: Cedric Babin von Karman Institute for Fluid Dynamics

Presenting Author Biography: Cedric Babin received his Ph.D. in 2022 by Ecole Centrale de Lyon. Since then, he has been working as Research Engineer in the Turbomachinery and Propulsion Department of VKI. His research interests are mainly focused on complex aerodynamic phenomena in axial compressors and their reduced order modelling.

Authors:

Cedric Babin von Karman Institute for Fluid Dynamics
Kevin Leclercq von Karman Institute for Fluid Dynamics
Anis Al Rifai Safran Aero Boosters
Remy Princivalle Safran Aero Boosters
Fabrizio Fontaneto von Karman Institute for Fluid Dynamics