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BlitterSand.ReadMe
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1990-09-14
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555b
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13 lines
BlitterSand
by Mike Creutz
P.O. Box 204
E. Moriches, NY 11940
This program simulates the cellular automaton model presented by P. Bak,
C. Tang, and K. Wiesenfeld (Phys. Rev. Lett. 59, 381 (1987); Phys. Rev.
A38, 364 (1988)) to illustrate self organized criticality. Each site carries
a positive integer representing the local slope of a sandpile. If the slope
exceeds 3, the site is unstable and on updating it drops by 4, adding one to
each of his neighbors. Sand is lost only at the edges. Any state will relax
to stability through such sand loss.