If your browser is enabled for Java, the following applet will demonstrate the role of inelasticity on the velocity and density distribution of a simulated one dimensional gas. The particle on the right gets a random velocity when it collides with the right wall.
There are two relevant parameters that may be adjusted:
The particles cluster near the left wall as r is decreased. You may also observe "inelastic collapse" (an infinite number of collisions in finite time) for small r.
The theory is from Y. Du, H. Li, and L.P. Kadanoff Phys. Rev. Lett. (1995).
The program written in Java using JDK 1.1. The advantage of an applet is that it is interactive. Move the bar on the top right to change r. Besides changing r and N, and the Reset button, you may also stop and resume the program by clicking on the black background.
Source code for the applet and program details.
For information on the program contact
last updated 2/18/97.