[Guimloute]

Hello,

I would like to simulate the flow of a fluid around a sphere.
I created a box with blockMesh (and blockMeshDict), where I defined patches for the inlet, the outlet and the walls. In particular, the patch named "walls" is of type wall.
With a CAD system I created a sphere.stl file.
Then I created a snappyHexMeshDict and I ran snappyHexMesh. But when I look at the boundary file, the "walls" boundary does not include the faces of the sphere.

Now I don’t know where I have to define which patch to apply to the sphere surface. I would like to define it as "walls". I have been looking for the answer for hours, in the tutorials, the on-line manual, this forum… I can not find the solution to my problem.

Would anyone have any piece of advice?

Thanks.