hexahedral mesh in hyperworks cfd

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Unknown
edited September 2023 in Community Q&A

I want to extrude the surface mesh with hex elements as shown below. I could do the same for the tetrahedral elements but I don't know why hyperworks does not allow me to create extruded hex mesh for the three volume sets. Is hyperworks cfd not meant for such meshing?

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Best Answer

  • ydigit
    ydigit
    Altair Employee
    edited September 2023 Answer ✓

    HyperWorks CFD (v2022.x) is primarily meant as preprocessor for AcuSolve. 

    AcuSolve is FEM based code, that stores information at nodes and not at the center/face of element. So essentially connectivity does not matter much (few exceptions are there). So if you have 8 nodes, you could connect them to form on hexa or multiple tetras. AcuSolve would see still 8 nodes. Other FVM based codes will see 1 hexa vs 4 tetras, hence their memory requirements might increase. 

    Back to the original question, HWCFD does not support creating hexa elements, as AcuSolve does not need them. Switch to AcuSolve if you are not already ;)

Answers

  • ydigit
    ydigit
    Altair Employee
    edited September 2023 Answer ✓

    HyperWorks CFD (v2022.x) is primarily meant as preprocessor for AcuSolve. 

    AcuSolve is FEM based code, that stores information at nodes and not at the center/face of element. So essentially connectivity does not matter much (few exceptions are there). So if you have 8 nodes, you could connect them to form on hexa or multiple tetras. AcuSolve would see still 8 nodes. Other FVM based codes will see 1 hexa vs 4 tetras, hence their memory requirements might increase. 

    Back to the original question, HWCFD does not support creating hexa elements, as AcuSolve does not need them. Switch to AcuSolve if you are not already ;)

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