Hard Disk PVT System Model

Hard Disk PVT System Model is designed as a feature-rich and versatile program which helps you simulate a two-dimensional system of particles confined between a thermal reservoir and a piston. This computer model is designed to study the equation of state for hard disks without other interactions. Slow-moving particles are color-coded as blue and fast particles are color-coded as yellow.  

Users can set the initial particle energy, the initial particle separation, and the thermal reservoir temperature Tr. The thermal conductivity parameter ? determines the probability that a collision with the thermal wall will affect (thermalize) the colliding particle.  If the conductivity is one, the particle velocity after a reservoir collision is set according to Maxwell-Boltzmann statistics.  

If the conductivity is zero, all reservoir collisions are elastic and the internal energy E of the system is conserved. Particles in this model have unit mass and interact through contact forces.  Collision times are computed analytically because particles and pistons move with constant velocity between collisions. The time evolution algorithm advances the particle and piston positions from collision to collision until the requested time step ?t is achieved.

• At least version 1.5 of Java.