# Wow!_A 2-chemical reaction-diffusion_

Wow!

"A 2-chemical reaction-diffusion system inspired by the Mandelbrot set.

For chemicals a and b, the relation is

Δa = C_a * (a * a - b * b) + ∇·∇b

Δb = C_b * (2 * a * b) - ∇·∇a

where C_a and C_b are constants and ∇·∇ is the Laplace operator.

Created using Ready https://code.google.com/p/reaction-diffusion "

Edit: Now available as a Ready file: https://reaction-diffusion.googlecode.com/svn/trunk/Ready/Patterns/Experiments/MandelbrotWorms_CornusAmmonis.vti (10kB)

"A 2-chemical reaction-diffusion system inspired by the Mandelbrot set.

For chemicals a and b, the relation is

Δa = C_a * (a * a - b * b) + ∇·∇b

Δb = C_b * (2 * a * b) - ∇·∇a

where C_a and C_b are constants and ∇·∇ is the Laplace operator.

Created using Ready https://code.google.com/p/reaction-diffusion "

Edit: Now available as a Ready file: https://reaction-diffusion.googlecode.com/svn/trunk/Ready/Patterns/Experiments/MandelbrotWorms_CornusAmmonis.vti (10kB)

Originally shared by Cornus Ammonis

A 2-chemical reaction-diffusion system inspired by the Mandelbrot set. For chemicals a and b, the relation is Δa = C_a * (a * a - b * b) + ∇·∇b Δb = C_b * (2 * a * b) - ∇·∇a where C_a and C_b are constants and ∇·∇ is the Laplace operator. Created using Ready https://code.google.com/p/reaction-diffusion/

Shared with: Public, Robin Houston, Cornus Ammonis

+1'd by: Elżbieta Zadora-Zuzelska, Torolf Sauermann, Robin Houston, simon gladman, 林則余, Hiroki Sayama, Doug Hackworth, Štěpán Roučka

Reshared by: Dave Gordon, Hiroki Sayama

*This post was originally on Google+*

But maybe that’s not what’s going on in Cornus’s Ready implementation. I can’t easily tell.

If you hadn't already noticed, I have now posted the Ready VTI file in the video's description.

I look forward to your variant. My version uses the same clamping as yours, but no random noise. (Other differences that don’t seem to make any difference to the result include using RK4 rather than Euler and a five- rather than nine-point stencil for the Laplacian.) But I don’t think the patterns I’m seeing are the same as your “worms”. Mine settles into a time-periodic solution eventually.