[lilinghan8]

hi,

I would to add a cylinder(fixed) in the middle of a wave tank, how to do the mesh generation?
I learned from tutorial "flow around a cylinder" http://www.foamcfd.org/Nabla/guides/...Guidese12.html
and divided the tank into 20 blocks.

The first problem is about "inequality of cells number between neighbour blocks" I dont quite understand about how to set the red part of each block, the order or the numbers after it:

hex (4 9 10 5 23 28 29 24) (100 20 50) simpleGrading (1 1 1)

The second problem is after mesh generation (I just set all the numbers of cells in each direction equals the same) I use waveFOAM to generate wave and finally I got floating point exception issue, i am not sure if it is caused by wrong mesh generation, is there any way to solve it?

Regards,
Vricc