Do .stl files work on Hyperworks CFD?

Ripfumelo
Ripfumelo Altair Community Member
edited February 28 in Community Q&A

Hi, i was wondering does Altair Inspire or Hyperworks CFD support fluid flow simulation for .stl or mesh file, i made a solid cylinder then applied a TPMS lattice in it, noticed Inspire would not let me select an inlet/outlet probably because its now a mesh (Implicit to Triangular mesh). Any way to work around this? i just want to perform a fluid flow plus thermal analysis to see how the lattice cylinder compares to a hollow cylinder in terms of pressure drop, temperature and velocity.

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Best Answer

  • acupro
    acupro
    Altair Employee
    edited February 28 Answer ✓

    You could try to import the STL using

    File > Import > Solver Deck > and set the type to .stl.

    You'll still need to make sure it defines the boundaries of a solid body (or bodies) in order to proceed with the 'Validate' process, create the volume mesh, and the simulation.

Answers

  • acupro
    acupro
    Altair Employee
    edited February 28 Answer ✓

    You could try to import the STL using

    File > Import > Solver Deck > and set the type to .stl.

    You'll still need to make sure it defines the boundaries of a solid body (or bodies) in order to proceed with the 'Validate' process, create the volume mesh, and the simulation.

  • Ripfumelo
    Ripfumelo Altair Community Member
    edited February 19

    Alright thanks, i will try that, will be back here if i experience some problems.

  • Ripfumelo
    Ripfumelo Altair Community Member
    edited February 20

    Hi @acupro , i tried the instruction, the geometry does not appear, could it be that i made the .stl from 2023 version of inspire then work on a 2022 version of Hyperworks CFD? I've attached the sample file below. Thanks

  • acupro
    acupro
    Altair Employee
    edited February 22
    Ripfumelo said:

    Hi @acupro , i tried the instruction, the geometry does not appear, could it be that i made the .stl from 2023 version of inspire then work on a 2022 version of Hyperworks CFD? I've attached the sample file below. Thanks

    I am able to import that .stl on Windows in both HyperWorks CFD 2022.3 and HyperMesh CFD 2023.1.  Are you using EDU/Student license - or commercial/paid?

  • Ripfumelo
    Ripfumelo Altair Community Member
    edited February 22

    Hi Acupro thanks for getting back to my question, it's promising when it works on your side, i'm using student license. 

  • Ripfumelo
    Ripfumelo Altair Community Member
    edited February 22
    Ripfumelo said:

    Hi Acupro thanks for getting back to my question, it's promising when it works on your side, i'm using student license. 

    Here's a short clip of what i did.

  • acupro
    acupro
    Altair Employee
    edited February 28
    Ripfumelo said:

    Hi Acupro thanks for getting back to my question, it's promising when it works on your side, i'm using student license. 

    It may be a limitation with the Student Edition - trying to get more details on that.
    https://altairuniversity.com/altair-student-edition-limitations/

    When that large Solver Import Option panel opens, before you hit the final 'Import', what happens if you switch the reader options to Reader > STL instead of OptiStruct, then use the defaults?  (Your recording shows you using HyperWorks.  Is the behavior the same when using HyperWorks CFD?  I expect yes, but want to be sure - as that is where you would set up the CFD solution.)

  • Ripfumelo
    Ripfumelo Altair Community Member
    edited February 22
    acupro_21778 said:

    It may be a limitation with the Student Edition - trying to get more details on that.
    https://altairuniversity.com/altair-student-edition-limitations/

    When that large Solver Import Option panel opens, before you hit the final 'Import', what happens if you switch the reader options to Reader > STL instead of OptiStruct, then use the defaults?  (Your recording shows you using HyperWorks.  Is the behavior the same when using HyperWorks CFD?  I expect yes, but want to be sure - as that is where you would set up the CFD solution.)

    Alright thanks let me try what you said and will update you.

  • Ripfumelo
    Ripfumelo Altair Community Member
    edited February 22

    I tried the stl setting and Hyperworks CFD, no luck. Maybe its some limitations for the license.

  • Ripfumelo
    Ripfumelo Altair Community Member
    edited February 22

    Hey i noticed something, you did mention it may be student license limitations, which is true. I guess i'll design in Inspire then use third party software for the simulation part because i'll need it to prove my model works for the student global competition. Many Thanks.

     

    image

  • acupro
    acupro
    Altair Employee
    edited February 22
    Ripfumelo said:

    Hey i noticed something, you did mention it may be student license limitations, which is true. I guess i'll design in Inspire then use third party software for the simulation part because i'll need it to prove my model works for the student global competition. Many Thanks.

     

    image

    For that model, you would probably very quickly run into the limitation on 500,000 mesh nodes for AcuSolve, too.

    We may be able to get you a temporary license for the full version - so you can continue with Altair products.  What is your main simulation goal for this project?  Which university do you attend?  What is your name and university email address?  (You may also try submitting a ticket with explanation, etc, using your AltairOne login, rather than in this forum.)

  • Ripfumelo
    Ripfumelo Altair Community Member
    edited February 23

    Hellos, my aim is to show that my new model will have better thermal cooling efficiency, its an electronic system using flowing liquid as the coolant. Would be awesome if i could get a temporary license. I attend Witwatersrand University, i go by the name Ripfumelo, my email address is: 2111420@students.wits.ac.za.

    My trial period on Altair One has expired, i'll need to contact them.

     

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