[gmx-users] Why no water penetrate into my soluble molecule?

[Hanming]

Dear All, 

I used the Gromacs force field to solvate my molecule in water. In real
experiment this kind of molecule is easy to solvent in water, but I can not
find any water which entered into my molecue after long time MD. Does this
mean this kind of force field does not fit my system or I did something
wrong during the MD process? 

Thanks a lot and nice day. 

Ming