AERODYNAMIC DESIGN AND NUMERICAL ANALYSIS OF A COUNTER-ROTATING CENTRIFUGAL COMPRESSOR

Counter-rotating turbomachines offer more design and control options than conventional machines. While axial counter-rotating turbomachines have been widely studied, few studies have focused on centrifugal ones. This paper presents a detailed numerical study on the benefits of counter-rotating impellers for centrifugal compressors, specifically the impact of speed ratio on performance gain. The study used 0D/1D models and optimization methods to meet design