Hi,
Why fix viscous cannot be used with dynamic groups? I’ve checked the code and I haven’t found anything which would require a constant number of atoms.
Cheers,
Michal
Hi,
Why fix viscous cannot be used with dynamic groups?
because it hasn't been reviewed for being compatible with dynamic groups
or not.
the default for fixes is to be flagged as incompatible. since
if you add:
dynamic_group_allow
= 1;
to the fix viscous constructor, it will no longer stop with an error.
I've checked the code and I haven't found anything which would require a
constant number of atoms.
yes, indeed. i just changed this in my local repository and added it to a
pull request. should be included in the next LAMMPS patch:
https://github.com/lammps/lammps/pull/655/commits/aad8cd10ffa28f6681f7e5b7351ea6ed695a8ab9
axel.