centrifugal compressor impeller with splitter blad

deepesh nanda

Hi, This is Deepesh(M.Sc student)from India (Bangalore). Boss, i m doing CFD analysis of the centrifugal compressor of micro-gas turbine. I tried using fluent but now shifted to CFX. The problem i m facing is that as the impeller is having splitter blade and its speed is 100000 RPM. By the time i reach to this RPM the flow at impeller exit become supersonic which actually is subsonic. I would like to know from u regarding BC'S u apply and the flow domain creation. currently i m using suction and pressure side of main blade and keeping splitter blade as it is. kindly reply fast with some suggestion. if u want i can send the cloud point datas. kindly oblige.

with regards, deepesh India (bangalore)