how to treat left handed faces
 

when performing the Grid check, it reports that there are 2 left handed faces and grid check failed. How to remove these left-haded faces? Do these left handed faces affect the simulation? Thanks!

Re: how to treat left handed faces
 

With a failed grid check, i don't think you can run any iterations.

If you are using Gambit, you can use the grid check function in Gambit to help you identify where exactly the problem may lie.