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-   -   Distribution of face mesh (http://www.cfd-online.com/Forums/ansys-meshing/84885-distribution-face-mesh.html)

pankos February 10, 2011 19:03

Distribution of face mesh
 
For face meshing it must be,first, determined the nodes of all its edges. If i want to determine additional nodes for different distribution of face mesh must be on face edge or on other edge type?
With other words, i must "split" the face at location where i want to add nodes so that to appear edge?

-mAx- February 11, 2011 02:22

Quote:

Originally Posted by pankos (Post 294725)
For face meshing it must be,first, determined the nodes of all its edges.

Not necessarly, you can mesh the surface directly. Gambit will mesh the edges with the size you gave in the surface mesh panel


Quote:

Originally Posted by pankos (Post 294725)
With other words, i must "split" the face at location where i want to add nodes so that to appear edge?

Yes. Split your surface. you will introduce new topology (edge-point or surface) which can be used as source in a size fonction

pankos February 11, 2011 04:07

Ok.Thanks. But after meshing can i delete all these inner topologies so that ramain only the mesh? I want this i order to use this mesh face as sourse face in "cooper algorithm" for 3d meshing but if sourse face has inner topologies connot work.

-mAx- February 11, 2011 04:40

if you split your surface into 2 surfaces, than take the 2 surfaces as source for cooper

pankos February 11, 2011 06:55

Yes but if split partially the face (hard edge), i have not 2 faces. I have again 1 face with inner edge which can connect or not with outer edges.

Is there any way from this?

Have you man to talk more easy?

-mAx- February 11, 2011 07:11

hard edges are supposed to be fixed....
But you can try.
Why don't you want to split your face into 2 surfaces?



Quote:

Originally Posted by pankos (Post 294807)
Have you man to talk more easy?

I don't understand what you mean

pankos February 11, 2011 07:56

xaxa sory. I mean msn.
Have you msn to talk more easy?

-mAx- February 11, 2011 07:59

no msn
did you try to mesh your surface with an hard edge?

pankos February 11, 2011 08:04

Yes, the mesh of face is ok. Near hard edge i have dense mesh as i want. But i can not use this face for cooper alg. due to hard edge. Can i have the same mesh of face in face without hard edges(splits)?

-mAx- February 11, 2011 08:18

1 Attachment(s)
yes it failed because of hard edge.. that's why you need to fix it.
Tell me why you don't want to split your surface into 2 surfaces?
Attachment 6455

pankos February 11, 2011 08:50

Because, i want to distibute nodes at specified length of edge.
Look. I have make a NACA airfoil and i want to run it in transonic regime. I must put, general, few elements (less computational cost) but in region where appear the shock i want dense mesh. Therefore, i need dense mesh only near of hard edge. In residual face the pave method must do its work.

Ok. finally i will do as you talk(split at two faces) but i believe that there is a way to disconnect mesh by topology so that to move only mesh in same face without hard edges. Is there?

-mAx- February 11, 2011 08:55

can you post a picture of your model naca?

pankos February 11, 2011 09:00

1 Attachment(s)
This is the 2d mesh. The hard edge is appear in above face.

-mAx- February 11, 2011 09:17

1 Attachment(s)
Then split your surfaces so that your "shock-line" divide a surface into 2 surfaces.
For example like that

Attachment 6457

pankos February 11, 2011 09:35

Ok. Thanks. I will do with this way.

pankos February 11, 2011 13:41

1 Attachment(s)
Finally, it is working! The cooper scheme work with this way. Look the picture in witch i have split the face in three sub faces.


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