Coupling thermal and CFD results

gopal_rathore
gopal_rathore Altair Community Member
edited October 2020 in Community Q&A

Hi, 

I have solved a steady state CFD case of exhaust manifold  in ANSYS Fluent. I have obtained the temperature distribution over  the wall of the manifold and now would like to use the same for assessing the thermal stress in the manifold in optistruct

 

For the same, I wanted to know how can we get the temperature load applied in optistruct from fluent

 

Thank you

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Answers

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited January 2019

    You can try this setup within Altair Simlab with Acusolve and OptiStruct solver.Please refer below video and webinar

    3139ce8d6ff40ff1c50f78ee7ab97e3c1b2d6414

    SimLab Tutorials - Thermal FSI - Altair

    https://web.altair.com/thermal-fsi-powertrain-webinar-2018

  • gopal_rathore
    gopal_rathore Altair Community Member
    edited January 2019

    Hi,

    Currently the model has been solved in fluent and I have got the nodal temperatures from there

     

    Can we use those in optistruct directly

     

    Working on comparison with Acusolve also

     

     

  • gopal_rathore
    gopal_rathore Altair Community Member
    edited February 2019

    Hi,

    It is solved by exporting temperature into ASCII file and then loading the file in the temperature load case as .txt file 

    With foll. order of information

     

    x-coordinate  y -croodinate   z-coordinate temperature

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited February 2019

    Simlab also offers load mapping feature for different solver.Please explore same.I still suggest Simlab TFSI (Acusolve +OptiStruct) would be more suitable.

    <?xml version="1.0" encoding="UTF-8"?>Simlab load mapping.JPG

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited February 2020

    Hi Rahul,

     

    I have completed solving a CFD analysis for slug flow development in pipeline and obtained the output results in .h3d format (via AcuOut --> export .h3d).

    I would like to utilize those results (pressure, wall shear stress, moment, velocity) and perform linear structural analysis via SimLab. 

     

    1) I have imported directly the .h3d format into SimLab (Model Result + Model Data : without creating the solution). then I have proceed to create a solution via chosing AcuSolve Solver. but then I have encountered an error stating : AcuSolve Failed to Run. 

     

    2) then I have tried to import .h3d format into SimLab again (Model Result + Model Data : with the creating solution). I have found that solution is imported but the solver have been chosen by default to be Optistruct. but then I have created another solution by chosing AcuSolve Solver. then I can see the results. but when I have tried to create another solution for Linear Static, I have encountered another error : Check Optistruct Input File. 

     

    I have tried to go through all the tutorials and training materials , but I could not manage to import .h3d format results and use it for my structural analysis. 

     

    could you please assist to check how would i need to move forward ? 

     

    Do i follow steps in bullet item (1) or follow the one in bullet item (2) as per above ? 

     

     

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