surface not oriented - volume mesher
 

Hi,

I'm trying to execute an automated mesh, it works fine as a surface mesher but each time I've got a message appearing on the output saying "Error during orientation. Surface not oriented! Warning: Could not orient surface. Face proximity results may not be accurate."

When I try to execute it with volume mesher, it doesn't work anymore.

I think everything is due to this problem of orientation but I don't know how to solve it.

Thank you very much for your help.

Cheers

Julie