How to automesh CFD elements with multiple layers of enclosement

Jacobier_20601
Jacobier_20601 Altair Community Member
edited June 2023 in Community Q&A

Hi, I know that I can generate 3D elements in enclosed  2D elements. What if I have another group of enclosed 2D elements suspended in the enclosed 2D elements? If I only want to generate 3D elements in the space between them, what shall I do? For instance, I want to mesh a spherical shell, which is enclosed by two enclosed spheres. 

Tagged:

Answers

  • GTT Johan
    GTT Johan
    Altair Employee
    edited June 2023

    Hi Jacobier
    One way of doing it is to surface mesh outer and inner and chose to fill voids and then mark "comp per vol"
    So, Acusolve profile/CFD tetramesh

    1) mesh the faces
    image

    2) CFD tetramesh / comps per vol + Tetramesh params/ fill voids
    (I have colored the generated volume mesh manual)
    image

    Adding a small test file generated in Hypermesh 2021
    Hope this helps!
    /Johan

  • Jacobier_20601
    Jacobier_20601 Altair Community Member
    edited June 2023

    Thank you.

     

    Do you mean that I just mesh every layer and then pick up the layers that I want?

    I tried it on my model. Something weird came up. A window that said error in segmentation popped up and the Hypermesh crashed.  I did have a single edge left untouched. That was because when I isolated that edge, it did not show on the screen. When I tried to count the element, it shown a single node element was there. I was stuck with that single edge now.  This may not relate to the topic, but any thought please?

  • Jacobier_20601
    Jacobier_20601 Altair Community Member
    edited June 2023
    Jacobier_20601 said:

    Thank you.

     

    Do you mean that I just mesh every layer and then pick up the layers that I want?

    I tried it on my model. Something weird came up. A window that said error in segmentation popped up and the Hypermesh crashed.  I did have a single edge left untouched. That was because when I isolated that edge, it did not show on the screen. When I tried to count the element, it shown a single node element was there. I was stuck with that single edge now.  This may not relate to the topic, but any thought please?

    I resolved the problem. My 2D shells volume intercede with itself. That is why error comes out. 

Categories