[gmx-users] About Tabulated Potentials
zhangzhengc at mail.iggcas.ac.cn
Thu May 21 14:37:03 CEST 2015
I want to add the Morse potential for nonbonded interactions between CH4 and CH4. I used three table files each contain seven columns to add the H to H, H to C, and C to C Morse form interactions. I set Coulombtype=user, vdwtype=user , and Dispcorr = no, and add energrps and energrps_table in the mdp file. However, when I did NVT simulations, I didnot get accurate pressure for my pure methane system. Actually the pressure is 20 Mpa smaller. Could you tell what is wrong with my set or what I missed in adding tabulated potentials? I tested the using of tabulated potentials with LJ form potential, It works very well.
Look forward to your reply,
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