Example Use of Molecular Simulation 2.
Particles move at constant velocity until collision with wall
Pressure as a momentum flux
- P=(momentum to wall)/area-time
F/A [=] (mL/t2)/L2 [=] (mL/t)/L2-t [=] p/A-t
- elastic collisions with container walls
momentum transfer per collision
- sum over collisions for unit of time
pressure is not given exactly, but as an average
- sum over long time to, or over many time origins, to get precise average