rasoul nasiri wrote:
greetings GMX users,

When I use genbox command for filling solvent in CGMD simulation with Gromacs suit, I must use a larger van der Waals distance to avoid crashes. when I use default value (0.105nm), system will crash. Which distance is suitable for performing CGMD simulation. I used 0.15 or 0.2nm as distances. Are those OK?

Read up on your forcefield and find out how "large" the particles tend to be. It only has to be good enough, not perfect.

I have to switch back to the smaller radius afterward, Is it correct?

Changing what for what purpose?

if yes, How can I do it? I tried with editconf but could not.

I don't know what you mean.

Mark
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