[RAJ KIRAN]

Hi,
I am new to OpenFoam. I am trying to mesh my geometry using cfmesh. I am using only the mandatory settings for my MeshDict file. when i try to run cartesianMesh it gives the following error. I had a maxcellSize of 2

--> FOAM FATAL ERROR:
There are no cells in the mesh!
The reasons for this can be fwofold:
1. Inadequate mesh resolution.
2. You maxCellSize is a multiplier of the domain length. This can be reolved by reducing the maxCellSize by a fraction.i.e. 2.49999 instead of 2.5.

From function void cartesianMeshExtractor::createMesh()
in file cartesianMesh/cartesianMeshExtractor/cartesianMeshExtractor.C at line 108.

FOAM exiting

It works when I give maxcellSize of 4 or higher. I tried using local refinements to get fine mesh , but if i specify cellSize less than 4 in local refinements it gives the same error.
Can someone tell me where i am going wrong?

[RAJ KIRAN]

I am adding my case files, In case if any one want to check this.

Here is the link for files

https://drive.google.com/open?id=0B2...nh2YWI3WjVURDg

[franjo_j]

Hi,

The geometry is not closed. The mesher can handle coarse cells because the cells fill the holes. When you decrease the cell below 4 they become smaller than the holes, and the mesh leaks through those holes. You have to close the holes to be able to use smaller cell size.

[RAJ KIRAN]

Hi,

Thank you for the reply. I found out the mistakes in my geometry. This geometry is a part of my whole geometry. I overlooked this. I should have checked this things earlier, my bad. Sorry for troubling.