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Centrifugal compressor performance improvement through multi splitter impeller

Malik Adil, Zheng Qun, Qureshi Shafiq R., Ahmed Salman A., Gambo D. KB

Polish Maritime Research

2019

nr 2

6--14

In the paper, a back swept impeller of centrifugal compressor is experimentally studied and numerically validated and modified to increase its pressure ratio and improve efficiency, as well as to analyse the effect of splitter blade location between two main blades. The back swept multi splitter blade impeller was designed with a big splitter positioned close to the main blade suction surface and a smaller splitter close to the pressure surface. Adding this multi splitter improves the overall performance of the modified impeller due to less intensive flow separation and smaller pressure loss. In particular, the total pressure ratio was observed to increase from 4.1 to 4.4, with one percent increase in efficiency.