Hi Ju -
Thank you for the bug report - these are always appreciated, and help us improve MFiX. I can’t answer all your questions about meshing, but I can look at these tracebacks and fix any bugs that you encounter in the MFiX GUI.
The traceback in the most recent error report (chamber_delicate_structure1_2021-10-05T145209.031333.zip) is not related to holes in the mesh - you just happened to discover an unrelated GUI bug.
Error: 'QMoveEvent' object has no attribute 'modifiers'
File "C:\Users\juu\.conda\envs\mfix-21.3\lib\site-packages\mfixgui\vtk_widgets\base.py", line 125, in moveEvent
return qrw._mouseMoveEvent(ev)
File "C:\Users\juu\.conda\envs\mfix-21.3\lib\site-packages\vtkmodules\qt\QVTKRenderWindowInteractor.py", line 501, in mouseMoveEvent
self.__saveModifiers = ev.modifiers()
The bug is in code that is handling mouse events in the VTK window, it’s not related to the solver or the mesher. I think setting the dot product tolerance small probably helped, since you got further along this time.
This failure is occuring in new code I added recently to make the color-bar in the plots clickable. I will fix this, and we will probably have a 21.3.1 release containing this and a few other small bugfixes. However, this error should not be fatal - it should be safe to dismiss the error dialog and continue, maybe creating a new VTK tab will help as a workaround.
– Charles