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Gray-Scott Reaction–Diffusion

Two chemical species U and V diffuse, react (U + 2V → 3V), replenish, and decay across a periodic torus grid.

Simulation Controls
Brush Radius 10 px
Steps / Frame 12
Parameters (Sim Units)
Diffusion U (Du) 0.160
Diffusion V (Dv) 0.080
Feed Rate (f) 0.035
Kill Rate (k) 0.062
Field Diagnostics
Mean U 1.0000
Mean V 0.0000
Max V 0.0000
Grid Size 200 × 200
Click or drag on the canvas to inject chemical V and locally deplete U.