[tb465]

Hi All,

I've just started using openFoam and I'm looking to change my mesh using double grading. This sentence is in the wiki,

"Each of the grading sections is described by a triple consisting of the fraction of the block, the fraction of the divisions and the grading ratio"

and I was wondering what the fraction of the divisions is?

[Antimony]

Hi,

A typical block definition goes something like this:

hex (0 1 2 3 4 5 6 7) (NX NY NZ)
simpleGrading
(
1
(
(LY1 ny1 GR)
(LY2 ny2 GR)
)
1
)

Basically these should hold:
LY1 + LY2 = Span in the y-direction of the mesh
ny1 + ny2 = NY

i.e. the sum of the number of cells in each sub-block should equal the total number of cells of the big block.

Hope this helps.

Cheers,
Antimony