"acuprep.exe has stopped working"

Naresh_20479
Naresh_20479 Altair Community Member
edited April 2021 in Community Q&A

Hi

I am solving steady state CFD of a water jacket cooled motor.

when i click on solve , after few seconds a prompt as attached is displayed and the solution stops.

What could be the issue?

log file is also attached

 

 

 

Answers

  • acupro
    acupro
    Altair Employee
    edited April 2021

    Can you describe what you are trying to model here?  It looks like you have 'air' and 'water' names in the volumes.  If you do have both air and water, are they entirely separated - no shared nodes between air and water volumes?  (Are there any walls with air on one side and water on the other?)  How big is the model (nodes, volume elements), and how much memory (RAM) does the machine have?  Have you done other models of this type successfully - and if yes - what has changed?

  • Naresh_20479
    Naresh_20479 Altair Community Member
    edited April 2021

    The air and water are entirely separated by a metallic wall, No shared nodes.(Which means there is a wall with air on one side and water on other side)

     number of nodes : 480255

    number of elements : 2099278

    ram 32  GB ,    4 cores

     

    yes the model is done successfully earlier, now the change is mesh.

    The earlier model which is solved successfully has 

    number of nodes : 830901 

    number of elements : 3410774 

     

    But the current model has few elements fail in tet collapse . Does it effect?

    Please tell me what quality parameters to be verified for CFD simulation.

  • acupro
    acupro
    Altair Employee
    edited April 2021

    The air and water are entirely separated by a metallic wall, No shared nodes.(Which means there is a wall with air on one side and water on other side)

     number of nodes : 480255

    number of elements : 2099278

    ram 32  GB ,    4 cores

     

    yes the model is done successfully earlier, now the change is mesh.

    The earlier model which is solved successfully has 

    number of nodes : 830901 

    number of elements : 3410774 

     

    But the current model has few elements fail in tet collapse . Does it effect?

    Please tell me what quality parameters to be verified for CFD simulation.

    You mention a metallic wall.  Is that meshed with 3D elements - or is that just a zero-thickness surface with type = wall (or auto_wall)?

    In which interface (HyperMesh, HyperWorks CFD, SimLab, AcuConsole) did you create the model?

    Normally mesh element failure (collapsed, negative volume, etc) would be flagged/caught in AcuPrep, but I don't see any of those errors.

    If you are willing to share the model files (best would be the actual database - not just .inp and MESH.DIR) here, we could review, or you can contact your local support team.

  • Naresh_20479
    Naresh_20479 Altair Community Member
    edited April 2021

    The wall is meshed with 3D elements(tetra). 

    The model is prepared in HyperMesh.

    If to be shared, how do i securely share the input file with you.

  • acupro
    acupro
    Altair Employee
    edited April 2021

    The wall is meshed with 3D elements(tetra). 

    The model is prepared in HyperMesh.

    If to be shared, how do i securely share the input file with you.

    For secure share, I suggest you open a ticket with your local/regional Altair support team.