[Andrea_85]

Hi all,
I have to run a simulation with a mesh of prisms and hexas. This is my checkMesh:

Create polyMesh for time = 0

Time = 0

Mesh stats
points: 101178
internal points: 0
faces: 259884
internal faces: 118566
cells: 69762
boundary patches: 6
point zones: 0
face zones: 0
cell zones: 1

Overall number of cells of each type:
hexahedra: 29640
prisms: 40122
wedges: 0
pyramids: 0
tet wedges: 0
tetrahedra: 0
polyhedra: 0

Checking topology...
Boundary definition OK.
Point usage OK.
Upper triangular ordering OK.
Face vertices OK.
Number of regions: 1 (OK).

Checking patch topology for multiply connected surfaces ...
Patch Faces Points Surface topology
obstacle 1560 3120 ok (non-closed singly connected)
bottom 49 100 ok (non-closed singly connected)
right 68 138 ok (non-closed singly connected)
top 49 100 ok (non-closed singly connected)
left 68 138 ok (non-closed singly connected)
defaultFaces 139524 101178 ok (non-closed singly connected)

Checking geometry...
Overall domain bounding box (0 0 0) (0.00447 0.0062 5e-05)
Mesh (non-empty, non-wedge) directions (1 1 0)
Mesh (non-empty) directions (1 1 0)
All edges aligned with or perpendicular to non-empty directions.
Boundary openness (1.63471e-19 -2.90979e-18 -4.90414e-20) OK.
Max cell openness = 2.19738e-16 OK.
Max aspect ratio = 13.3858 OK.
Minumum face area = 8.1356e-11. Maximum face area = 7.04863e-09. Face area magnitudes OK.
Min volume = 4.0678e-15. Max volume = 3.16076e-13. Total volume = 1.21253e-09. Cell volumes OK.
Mesh non-orthogonality Max: 31.2939 average: 4.74797
Non-orthogonality check OK.
Face pyramids OK.
Max skewness = 0.495827 OK.

Mesh OK.


What are the best setting for fvScheme and non-orthogonal corrector? Is the option "limited 0.5" a good choise? Something like this:

gradSchemes
{
    default         cellLimited Gauss linear 1;
}

laplacianSchemes
{
    default         Gauss linear limited 0.5;
}
snGradSchemes
{
    default         limited 0.5;
}

And for the divergence what i have to choose? (Iam using interFoam)
divSchemes
{
div(rho*phi,U) ??
div(phi,alpha) ??
div(phirb,alpha) ??
}

and finally for the non orthogonal corrector in fvSolution, what is best choise?

Thanks for any help

andrea