About the stl in mfix_dem

hello everyone, is the mfix_dem can read the .stl file from the solidwork?
And what do i need to pay attention to load the .stl?

Yes. The challenge with STL files that CAD packages produce is that they often contain many high aspect ratio triangles with MFIX has trouble with. I have not used Solid Works in a long time and forget what options they have for exporting STL files. If there is anything that can be used to improve the triangle aspect ratios, I suggest playing with that.