Programming Reaction Diffusion Models

Learn how to program reaction-diffusion models in Java. Reaction-diffusion models are simple models of chemical interactions incorporating reactions between multiple chemicals and diffusion between cells. This video covers the classic Gray-Scott model used to generate beautiful, organic patterns. It teaches how to program diffusion (and image kernels), 2D arrays, and wrapping.

[johnfredcee]

This is such an amazingly clear explanation, I've wanted to understand this for ages, thank you!

[mirkobilek]

Nice lecture. Simple, short, and straight to the point.

[BenjeevRendhava]

Fantastic video! You've explained the diffusion and reaction parts of the equation so clearly. Thx!

[Fabian-cicb]

Oh thank you so much that you responded to my recommendation! I am looking forward to watching the video after work today 😊

[paulbesancon]

Greetings from France. Thanks a ton for this amazing video. You explained this very well, it was exactly what I was looking for. ✌️

[chillcompany]

Thanks! I would like to see more complex mathematics and numerical calculation methods for building various models :)

[jaibhimadevi]

Great channel! I first became interested in programs like these with early chaos/fractal software; later, Rudy Rucker's CAPOW and others kept exploration interesting. One of the bits of Javascript I'd saved (and lost) was a relatively small applet that would simply open a (relatively) small animated grayscale graphics window, displaying what looked very reminiscent of TEM images of bacteria etc., only with a pseudo-3D, transparency aspect to the "layers".. can't remember what it was called or what site it came from, but many versions of Java ago, when Processing was still New And Shiny.

[enigma]

Really a nice and impressive work. Can you please let me know which COMSOL command I should use for this simulation and what are the parameters?what is the exact equation for allen cahn 2D and 3D which i can use in comsol multiphysics.

[ee]

For some reason I end up with negative values for chemical A, Ive checked the parameters. Any suggestions?

[limboreversible]

THIS CODE IS INSANE !! Thank you ! (that's one I liked right here //d1=1, d2=0.5, f=0.079, k=0.058)

[RogovAB]

I am not sure how this formula for divergence correlates with real diffusion. What if the central cell (source<0) has concentration smaller than surrounding cells (acceptors>0)? Would implementation of such an operator contradict the second law of thermodynamics? May be I missed something.

[arindampal]

Good evening sir, its really very interesting project. I like to know which IDE you have used for the above project? Can I get the code in a text file?

[lesbaws]

Awesome video! Can you put a link to a gist with the source code?