Noble model. 1D travelling waves
Again we include diffusion term D Δu = D ∂2u /
∂x2 to get running waves (D = 0.001 cm2/ms).
For Δx = 0.015 cm you can see alternans.
For Δx = 0.01 cm waves can not propagate.
This script uses simple explicit algorithm. It makes it time steps
per frame. x length is 1024Δx.
Set it = 1000 to test wave speed.
updated 6 Mar 2012