About Group Dynamics

[godisreal]

Not sure whether the existing group model in FDS+EVAC works or not. There is no documents about it. In fact there is a new force-based model of group dynamics. Personally I think it is a better model, and it is reasonable to replace existing model with the new one.

https://groups.google.com/forum/#!msg/fds-smv/zbIIieEBzjc/NBIyLKAwBAAJ

In existing code in evac.f90:
HR%GROUP_ID < 0 -- Individual (Lonely Agent)
HR%GROUP_ID = 0 -- Agents from Entr Namelist
HR%GROUP_ID > 0 -- In Groups

After checking the code in evac.f90, I personally think that HR%GROUP_ID > 0 does not work well.