Help needed: Transfinite mesh - can only be defined on solid parts with 5 or 6 faces

General Questions
1

Hi :slight_smile:
I need your help. Please note that I am a PrePoMax Beginner. I am struggling with transfinite mesh. I am trying to generate a quader mesh and splitted my product in many parts. So every part only has 5 or 6 faces. But now I am still not able to transfinite the mesh :frowning:
Can you please take a look at my project?

Thank you for your help! I appreciate it :slight_smile:
Kind regards,
Jana

2

The files: PrePoMax - Google Drive

3

This part has more than 6 faces:

image
image1046×590 7.97 KB

Split it where the small face is before importing to PrePoMax.

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4

Ah damn, thank you. I splitted it but it is still one part, I see. But when I try it on the other Compound parts, the same message occurs:

grafik
grafik1355×571 82.1 KB

Do you see more than 6 faces here?

5

I don’t know which parts should be compounded together but try with this file:

splitted 2.zip (15.1 KB)

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6

Wow, you´re an angel! Thank you. The upper baffle plate worked, but the lower one did not. I’m very surprised, because there are really only three cuboids next to each other?

grafik
grafik705×439 28.8 KB

When I try all off the 3 parts differently, transfiniting works. But not as a compound part..?

7

You have to further split the volume of the green part in such a way that it has two faces on the top - one matching the bottom face of the small cuboid.

image
image478×715 12.5 KB

splitted segment.zip (6.6 KB)

2 Likes
8

Ah, thanks! Now I´m happy and I know what to remember in the future. Have a nice day! :slight_smile:

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9

Jakub has answered faster than i :laughing:

Prepomax/Gmsh are good tools to develop good habits in meshing especially if you want structured/hex meshes: the secret = split first the CAD into elementary volumes (that’s the main work); the methodology remains true in other great meshers such as Hyperworks, Abaqus CAE and so on

splitted3.pmx (656.9 KB)

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