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Coupling thermal and CFD results

User: "gopal_rathore"
gopal_rathore
Altair Community Member
Updated by gopal_rathore

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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    User: "Rahul Rajan_21763"
    Rahul Rajan_21763
    New Altair Community Member
    Updated by Rahul Rajan_21763

    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

    User: "gopal_rathore"
    gopal_rathore
    Altair Community Member
    OP
    Updated by gopal_rathore

    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

     

     

    User: "gopal_rathore"
    gopal_rathore
    Altair Community Member
    OP
    Updated by gopal_rathore

    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

    User: "Rahul Rajan_21763"
    Rahul Rajan_21763
    New Altair Community Member
    Updated by Rahul Rajan_21763

    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

    User: "Altair Forum User"
    Altair Forum User
    Altair Employee
    Updated by Altair Forum User

    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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