boundary velocity particle excluded/error
I have developed a simulation for a rotating capsule with water, pieces of plastic media, and a metal part as shown below (removed the fluid from the capsule for better visualization of the boundary particles, but the capsule if filled half way with water).
Everything works except after a certain number of generated vtk files the error below pops up. After looking at the error boundary vtk file it doesn't make much sense what is wrong because there are very few particles visible to make out what is going on.
As I decrease the particle spacing the number of vtk files that gencase can produce also increases thus nearing the completion of the simulation. This can become on issue because the memory of the folder containing vtk files can become substantially large and the processing time can take very long as well. I am not sure why this is happening so how can I resolve this issue without having to increase the resolution (decrease the particle spacing)?
Below is the last vtk file produced and proceeding it has the enhanced image of the error boundary vtk particles that have been enlarged as black spheres (8 black particles) and circled in red.