Volume zero CFD tetramesh

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hello, I'm having some problems when trying to mesh a model. I attach the image to better understand my problem. I made the 2D mesh of the whole geometry with the automesh panel, then I made the BL with the CFD tetramesh panel without problems. When I try to do the full 3D mesh of the geometry enclosed in a shell, there is an error message: 'Topo err: 2 volumes have volume=0.0 (check elem overlap)' and an orange line appears on my geometry. I tried to 'close' the geometry with 'toggle' but that line isn't a 'real line', I tried to look for open edges but there is none, I also tried the cleanup but I wasn't able to solve the problem. Anyone can help me?

<?xml version="1.0" encoding="UTF-8"?>Img2.jpg

<?xml version="1.0" encoding="UTF-8"?>Img1.jpg

<?xml version="1.0" encoding="UTF-8"?>Img3.jpg

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Answers

  • tinh
    tinh Altair Community Member
    edited July 2016

    Hi,

    Did you check for any T-Connection?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2016

    Yes, no T-Connections. I try to do the 2D mesh again and it says that the mesh is not enclosed, with orange lines in the same region.

  • tinh
    tinh Altair Community Member
    edited July 2016

    how's about free edges?, any self intersection/penetration?

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2016

    Already check, nothing to do. I also did the equivalence, but nothing.

  • tinh
    tinh Altair Community Member
    edited July 2016

    Could you share your model?

    Maybe the edge is so sharp, so hm cannot generate elements there

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