Analyze molecular dynamics with this tool. Molecular Dynamics Adiabatic Piston model shows two gas samples within a horizontal cylinder that is divided by an insulated piston that moves without friction. Initially the piston is held (locked) in place, and the pressures of the gases on each side of the piston are different. When the piston is released it undergoes oscillations that are damped due to collisions of the particles with the piston, and it finally ends up at rest. The final pressures of the two gases are equal, but the final temperatures are typically different.

Particles in the Molecular Dynamics Adiabatic Piston model have unit mass and interact through pairwise Lennard-Jones forces.?Gas particles interact with the container walls via a spring (Hooke's law) force and this particle-wall interaction is used to move the piston and to compute the pressure.The temperature is computed from the average kinetic energy. The piston position and the temperature and pressure are shown as functions of time in additional windows.

Requirements:
* Java

The license of this software is Free, you can free download and free use this graphing software.