Mixing tank: Water not moving

Claudia Milena Vargas Maldonado
Claudia Milena Vargas Maldonado New Altair Community Member
edited March 22 in Community Q&A

Hi, I'm recently workingn with hypermesh cfd. I'm trying to simulated a mixing tank (multiphase air-water), the geometry is quite simple, but when I get the results, the water velocity is 0, only the air is moving. I'm not sure what to do to make it work.

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Best Answer

  • acupro
    acupro
    Altair Employee
    edited March 22 Answer ✓

    At least a couple of things here

    1 - Need to activate Specified motion - in the Motion ribbon, Setup/Settings - set Mesh Motion type to Specified

    2 - The boundary surfaces between the fixed and moving bodies need to remain in the Default Wall set - not be placed as Slip boundaries.  The Auto-Wall treatment will determine those surfaces are between a fixed and a moving body, split the nodes, then treat them properly to transfer information across that disconnected boundary.

    Here's a relevant tutorial:
    https://help.altair.com/hwcfdsolvers/acusolve/topics/tutorials/acu/acu_5001_intro_cfd_r.htm#acu_5001_intro_cfd_r

Answers

  • acupro
    acupro
    Altair Employee
    edited March 22 Answer ✓

    At least a couple of things here

    1 - Need to activate Specified motion - in the Motion ribbon, Setup/Settings - set Mesh Motion type to Specified

    2 - The boundary surfaces between the fixed and moving bodies need to remain in the Default Wall set - not be placed as Slip boundaries.  The Auto-Wall treatment will determine those surfaces are between a fixed and a moving body, split the nodes, then treat them properly to transfer information across that disconnected boundary.

    Here's a relevant tutorial:
    https://help.altair.com/hwcfdsolvers/acusolve/topics/tutorials/acu/acu_5001_intro_cfd_r.htm#acu_5001_intro_cfd_r

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