||October 12, 2013 21:14
help ! centrifugal compressor stimulation
I'm new to CFX software. I am trying to stimulate a centrifugal compressor. the model include a impeller passage, a diffuser passage,a whole volute. The inlet boundry is total pressure, total temperature, direction of velocity. The outlet boundry is mass flow. it is a steady stimulation. But after 1200 iterations, the mass flow of inlet and outlet isn't equal. If I only compute the impeller and diffuser, it can be converged, and If I only compute the volute, it also can be converged. So I think the problem is the condition of outlet can't be propagated to the inlet. Maybe the problem is the interface of diffuser outlet and volute inlet, Who can help me? thanks!