[jiahui_93]

Hi everyone, I faced printstack error when running pimpleFoam. I saw some posts said that it may be caused by division of 0 but I didn't set 0 value for any fields except nut.
Attached is link of my input files.
https://www.dropbox.com/sh/ea5auq83u...9ZzX7N7Sa?dl=0

This probably caused by bad mesh. So I checkMesh but the result is ok and last time step showed fail 1 mesh. However, foamToVTK showed that my cellSets, eg: carExtCS (a hollow box) is ok before that. But it became inappropriate after subSet Mesh. Attached picture is cellSet carExtCS before and subsetMesh
carExtCS b4 subsetMesh.png
carExtCS aft subsetMesh.png

May I get some help on this? How should i subsetMesh to delete unwanted region to make a hollow space within my domain? Thanks a lot for your time to read through this

Below is the output when run simulation
https://www.dropbox.com/s/xu4hljpr7l...blockMesh?dl=0