3D cfd mesh

Altair Forum User
Altair Forum User
Altair Employee
edited February 2023 in Community Q&A

hi 

 i am doing cfd tetra mesh in hyper mesh when i am converting 2D to 3D i found some error 

i) volume analyzer found 1 disjoint element( how can i find the disjoint element)

II) 8 bad elements need to cleanup, re mesh the origin mesh ( how can i rectify this problem and how to fine those bad elements )

what are  quality to maintained in cfd mesh  

note: no free edge, no connectivity  error , no duplicate elements

 

pls help me .........

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Answers

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited August 2018

    You not 'convert' 2D mesh into 3D mesh. But you can fill a closed 2D mesh with 3D elements (tet4, tet10).

    Before filling, check if your 2D mesh was closed by using: Tool => edges => find edges. If you found nothing, your 2D mesh is closed and you can do next step to fill with TET.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2018

    i used tet10 for cfd 3D tetramesh 

    i check edges it show no free edges.

    i got another error 

    <?xml version="1.0" encoding="UTF-8"?>21.JPG

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited August 2018

    So check 'failed elems' to understand the issue.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2018

    HOW TO CHECK IT 

     

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited August 2018

    When you see the message '71 failed elems saved', do 'F5', select type 'Element' and 'retrieve', 'reverse', 'mask'. You have only failed elements on screen.

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited August 2018

    thank you 

    but i have another doubt 

    volume analyzer found one disjoint element 

    what it mean its an error or any other can explain 

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