Numerical Investigation of Air Injection in the Endwall Region of a Highly-Loaded Compressor Tandem Stator Configuration

The current research focuses on the implementation of air injection in a highly-loaded axial compressor to energize low-momentum flow regions and enhance aero- dynamic performance. This study introduces air injection at the casing endwall of a tandem stator in a low-speed compressor, marking the first of its kind for tandem stator configurations. The methodology comprises two phases: an initial numerical investigation of the smooth casing case via steady-state modeling, followed by a parametric study to optimize injection slot geometry and identify beneficial locations. The study quantifies the effects of continuous injection on performance improvement across both design and off-design conditions, with an integrated analysis of aerodynamic losses associated with air injection. The aim is to find optimum arrangements that maximize the advantages of tandem stator vanes, ultimately leading to improved compressor performance.     «

The current research focuses on the implementation of air injection in a highly-loaded axial compressor to energize low-momentum flow regions and enhance aero- dynamic performance. This study introduces air injection at the casing endwall of a tandem stator in a low-speed compressor, marking the first of its kind for tandem stator configurations. The methodology comprises two phases: an initial numerical investigation of the smooth casing case via steady-state modeling, followed by a parametric...     »