[Svensson]

In cfd computations grow rate of cells should be about 1.1-1.5 near a wall. But in all examples from tutorials aspect ratio of conectings edges is 2. How can I change it?

Thanks in advance!

[tomislav_maric]

Originally Posted by Svensson

In cfd computations grow rate of cells should be about 1.1-1.5 near a wall. But in all examples from tutorials aspect ratio of conectings edges is 2. How can I change it?

Thanks in advance!

Edit this kind of line in the "const/blockMeshDict" file:

hex (0 1 2 3 4 5 6 7) (20 20 1) simpleGrading (1 1 1)

there you will see that the mesh grading is defined alongside edges of every block. There are more information on this in the User Guide:

http://www.openfoam.com/docs/user/bl...#x25-1420005.3

Tomislav

[Svensson]

I'm asking about another problem.. I use snappyHexMesh and would like to have 'grow rate' from the body with any coefficient (in my case 1.3).
Is it possible in sHM?

[tomislav_maric]

Originally Posted by Svensson

I'm asking about another problem.. I use snappyHexMesh and would like to have 'grow rate' from the body with any coefficient (in my case 1.3).
Is it possible in sHM?

I remember it being possible, but I can't remember how to use it... I did set this up a while ago, but if I remember correctly, it was only the refinement increase for the bulk of the mesh in defined regions. For instance, there was a distance vector of some kind (if I remember correctly), and for every different distance from a patch, a different refinement level is prescribed.

Tomislav