[gmx-users] center of mass motion in lipid bilayer

[Jian Dai]

Hello, everyone:
I have a  system which is composed of a lipid bilayer and water layers upon
each monolayers.
Now the problem is that after the simulation, the lipid bilayer shift upward
inside the simulation box , and makes the upper water layer thinner, while
the lower water layer thicker.
In mdp file I turned off the COM for SOL and LIPID separately, and as a
default, comm_mode=angular.
Do you have any idea?
Thank you in advance.
Jian
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