On Sun, Apr 9, 2023 at 9:01 AM Ran Zhao <[email protected]> wrote:
>
> Hello, I am preparing to simulate the polymer in a water solution using the 
> Martini force field.
> In the simulation model, I want to set a specific tabular potential between 
> water beads. And other beads still follow the martini force field.
>
> In gromacs, when one wants to use tabular potential, some lines should be 
> added in .mdp file:
> vdwtype                    = User
> rvdw                          = 1.0
> energygrps               = POL (the name of type of water bead)
> energygrp_table       = POL POL
> the mdrun command will read the table_POL_POL.xvg
> But, I want mdrun to read the force field of other beads from the martini 
> .itp file.
> Is it possible for me to do this in gromacs?
I think this is more a question for the gromacs mailing list, but as
far as I know you cannot mix tabulated with non-tabulated
interactions.
You can still make that work as Gromacs will read a standard LJ 6-12
table (table.xvg) for all groups that aren't covered by the pairs in
energygrp_table though.

Christoph

> Looking forward to and thank you for your answer
>
> Sincerely yours
>                     Ran
>
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-- 
Christoph Junghans
Web: http://www.compphys.de

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