Rules for storing particles in bi4 files
I wonder what rules the particles are arranged according to in the BI4 file.
When I output CSV format, IT seems that the particles of nfixed and Nmoving type are arranged in the front of the file, and then the particles of Nfloat and Nfluid type are output. However, the line numbers of these particles are not fixed in the file of each time step. May I ask in what order are the particles stored in the BI4 file?
Looking forward to your reply