Introduction
We have used molecular dynamics simulations to make "movies"
of the different phases of matter (solids, liquids, and gases), with
a particular focus on gases and mixtures of gases.
The movies on this page are each about 9.5~Mb in size.
Simulations of pure methane
(modeled as a single spherical particle)
A solid at T=15.7 K
A solid at T=78.5 K
A liquid at T=125.6 K
A (dense) gas at T=125.6 K
A (dense) gas at T=314 K. Also
available in a bigger simulation cell.
Methane gas at T=298 K and 1 atm. pressure
Simulations of a mixture of methane and xenon
These movies show nicely how the heavier (xenon) atoms move much more
slowly than the light methane molecules, even though they are at the
same temperature.
Methane/Xenon mixture at T=314 K
Methane/Xenon mixture at T=471 K. Also
available in a smaller simulation cell.
(This is my favorite movie of the bunch.)
Technical Details
Will put these up soon. Briefly, these are straightforward
thermostatted molecular dynamics simulations of the Lennard-Jones
potential. Frames are rendered with POV-RAY, and the movies are
assembled and edited with MainActor.
Credits
Andrea Delapaz did everything! Thanks, Andrea!