Creating patches in OpenFOAM
 

I have a geometry of human airway tree. I have done the meshing using snappyhexmesh flange tutorial. Now I need to create patches to define boundary conditions.
When I am doing 'autopatch' it is creating too many surfaces which I don't need. I need patches only at trachea inlet and outlet.
Please help me in solving the issue.
I am attaching mesh for your convenience.

Attachment 74549

Hi

Use paraview to select the cells you want to use and export to stl.

Then use surfaceToPatch command to make the stl into a boundary condition.

See this post.

https://www.cfd-online.com/Forums/op...oundaries.html