[ykj5467]

Right, not sure what is going wrong here, but I can't build a fluid volume mesh within a domain that snaps to the outer domain surface/boundaries.

I've created a simple box to illustrate (attached image).

I create STL files in Blender, and import these into ICEM. I don't run any repair geometry or create/modify surfaces. I don't need to split my surfaces or geometry because I have already done this in Blender. Perhaps I'm wrong on this. I want to keep all the geometry work in Blender.

I proceed through a standard route to generate a mesh, but the Fluid volume mesh doesn't fill the bounding box.

Any help much appreciated. Thanks.