Hello All,
I am using the Shock package in order to simulate a shockwave on water.
I am using SPC/E model for water and fix wall/piston command. One requirement for fix wall/piston is to use non-periodic boundary conditions in z direction, S (shrink-wrapping):
fix 1 all nve
fix walls all wall/piston zlo pos 0.0 vel 0.0 units box
velocity all set 0.0 0.0 -0.01 sum no units box
However the issue I have faced is to how calculate the long-range electrostatic interactions in z direction using pppm given the boundary must be s. I also cannot use kspace_modify slab to fix this.
My question was how to include long-range electrostatic interactions when using fix wall/piston command and non-periodic conditions in z?
Thank you,
Amir