axial fan modeling

Jagan
Jagan Altair Community Member
edited August 2022 in Community Q&A

I'm getting high velocity in the shroud region I have attached my input file and geometry/result animation pictures for reference. Could you please let me know what's wrong with my model if possible?

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Best Answer

  • acupro
    acupro
    Altair Employee
    edited August 2022 Answer ✓

    My first guess is that you need to move the pipe surface attached to the fan volume into it's own No-Slip boundary set, such that it doesn't get the reference frame applied to it via the Auto/Default Wall process.  If you look at the pipe wall and see the angular velocity due to the fan reference frame definition, that is likely the cause.

Answers

  • acupro
    acupro
    Altair Employee
    edited August 2022 Answer ✓

    My first guess is that you need to move the pipe surface attached to the fan volume into it's own No-Slip boundary set, such that it doesn't get the reference frame applied to it via the Auto/Default Wall process.  If you look at the pipe wall and see the angular velocity due to the fan reference frame definition, that is likely the cause.

  • Jagan
    Jagan Altair Community Member
    edited August 2022
    acupro_21778 said:

    My first guess is that you need to move the pipe surface attached to the fan volume into it's own No-Slip boundary set, such that it doesn't get the reference frame applied to it via the Auto/Default Wall process.  If you look at the pipe wall and see the angular velocity due to the fan reference frame definition, that is likely the cause.

    thanks

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