Hello,
In the simulation, the fluid motion is induced by force. How does the force correspond to the actual medium pressure?
Is it through F=△P*S, and then it distributes the force to the particles inside?
Best,
Shuai Zhang
Hello,
In the simulation, the fluid motion is induced by force. How does the force correspond to the actual medium pressure?
Is it through F=△P*S, and then it distributes the force to the particles inside?
Best,
Shuai Zhang
pressure in LAMMPS is “computed” by compute pressure
for details on how and what it represent, please see the corresponding documentation in the LAMMPS manual and the referenced publication and suitable text books.
https://docs.lammps.org/compute_pressure.html
axel.
I should add that pressure is a diagnostic and has thus no direct impact on forces.
it won’t affect the outcome of a simulation unless you couple something to it, e.g. in fix npt or fix press/berendsen which will modify box dimensions.
axel.