Dear Maryam, You can make use of mdrun's -field option, and inspect its output. I have had situations where a static field hasn’t worked the way I expected it to, so it is generally a good idea to check just to be sure. It is usually enough to just run the simulation for a few steps, inspect the reported field strength, and restart without the field option to save diskspace.
Kind regards, Erik > On 15 Nov 2015, at 19:28, Maryam Kowsar <maryam.kow...@gmail.com> wrote: > > Dear users, > > I applied electric fields of different magnitudes (less than 1 v/nm since > higher amounts are avoided) in my system. I have some charged water > molecules and I expected to see very different results when the magnitude > is changed, but haven't got that much difference. How can I be sure that > electric fields worked? > I found the following link that it changed the code of electric field > according to the shape of the system: > http://www.gromacs.org/Developer_Zone/Programming_Guide/Patching_mdrun > Can the current implemented code in gromacs be applied for all systems or > should I change it for different systems? > > Thanks! > -- > Gromacs Users mailing list > > * Please search the archive at > http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! > > * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists > > * For (un)subscribe requests visit > https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a > mail to gmx-users-requ...@gromacs.org. -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to gmx-users-requ...@gromacs.org.