Brownian Dynamics Parameters

GROMACS version:
GROMACS modification: Yes/No
Is anyone has experience doing Brownian dynamics using Gromacs for any kind of polymer? I need help in setting up some of the control parameters. I am aware of bd integrator and friction coefficient but it seems not working for my system. Any help will be appreciated!

I can not understand exactly what is your problem.

But maybe you can look at this post

or other posts in the forum on brownian dynamics

Best regards