[gmx-users] How do gromacs remove center of mass of a group?
Mark.Abraham at anu.edu.au
Mon Oct 20 15:47:49 CEST 2008
> Hi all
> I would like to know how gromacs remove center of mass motion?
The COM velocity is the rate of change of the position of the COM, i.e.
the mass-weighted average velocity of the particles. If you subtract
that from each particle velocity, the COM velocity becomes zero.
Likewise for angular motion, if applicable.
> I thought it still allowed center of mass motion, but just did a
> transformation of the coordinates at a certain frequency.
I've never heard of GROMACS doing anything like that for this purpose.
> It's just like looking at the system in a noninertial system attached to
> the COM of the group.
> Is that right?
I don't know what you mean.
More information about the gromacs.org_gmx-users