Suction boundary

Joshua García
Joshua García Altair Community Member
edited September 2023 in Community Q&A

Hello,
I am trying to simulate a cyclone separator with EDEM and Hyperworks CFD. 
As this system works doing suction (taking air out of the system) what kind of boundary do you think is better to represent that suction?

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Answers

  • ydigit
    ydigit
    Altair Employee
    edited September 2023

    Generally "Stagnation pressure" inlet BC would work the best. 

    Tutorial on a blower, does not specify inlet flow rate, it define the MRF velocity and lets the fan rotation decide on suction from inlet.

    ACU-T: 5000 Centrifugal Air Blower with Moving Reference Frame (Steady) (altair.com)

     

  • Joshua García
    Joshua García Altair Community Member
    edited September 2023

    Thank you very much for your response,
    So, I understand that the only solution is to add one more element to the simulation that generates this vacuum, right?

  • acupro
    acupro
    Altair Employee
    edited September 2023
    Joshua García said:

    Thank you very much for your response,
    So, I understand that the only solution is to add one more element to the simulation that generates this vacuum, right?

    If I understand correctly, a cyclone separator generally has one inlet and two outlets.  Are you modelling it that way?  Are you specifying a velocity/mass-flow-rate/volume-flow-rate at the inlet - then want also to specify a flow rate at one of the outlets?  (Then the remainder would leave through the other outlet.)

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