Reply To: Incomplete indicator shape
I just tried your code and increasing the resolution seems to work correctly. Due to the use of regular grids in LBM, increasing the resolution is the primary way of resolving geometry details. The corresponding increase in (sequential) simulation time is handled by the very good parallelizability. As your example currently only uses ~20k cells you can significantly increase the resolution even on a single compute node.
w.r.t. VTK: There is no need to look at the raw files for this issue, you already checked the output in ParaView (which visualizes the VTK files)