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boundary condition problem in centrifugal compressor
Hi evrybody
I'm doing a centrifugal compressor with vaned diffuser(operating in subsonic regime) simulation, using CFX. when I choose mass flow rate in outlet and static pressure in inlet boundary there is no problem and the results are acceptable, but when I choose pressure in outlet boundary, flow COMPLETELY reveresed in both inlet and outlet boundary. I've tried these conditions: - changing pressure value - changing angular velocity - Opening boundary condition - outlet average static pressure(average over whole outlet) - setting mass flow target in rotor-stator interface but there is no improvement :confused: I appreciate any HELP thanks. |
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