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negative oulet mass flow

sima101f

I am trying to simulate a 4 stage axial compressor, My mesh quality is good however when i try to run solver my solutions never stablizes and outlet mass flow becomes negative. I tried using intialize with cosnt. blocks as i have data of Temperature and pressure at intermediates interfaces. Also i tried with initialize with turbomachinery but none has worked. Kindly suggest something . Thanks

  • domen
    +1

    Hi, are you sure that the pressure or mass flow rate impose falls into the range of the compressor? Multistage machines tend to have a very narrow working range.

  • sima101f
    0 in reply to domen

    Hi, Thank you very much for your reply. Yes, everything was correct. I solved the issue by extending the outlet domain by 50 mm 

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