Graphical labs · Discrete lab (diagnostics on screen)
Reaction–diffusion
Gray–Scott patterns
u_t = Du∇²u − uv² + F(1−u) · v_t = Dv∇²v + uv² − (F+k)v (Gray–Scott)
Periodic 5-point Laplacian, Δt=1, Δx=1. Color = v.
- F
- 0.0370000
- k
- 0.0600000
- Du, Dv
- 0.16, 0.08
Finite-difference / Monte Carlo / RK scheme at teaching resolution. Conserved quantities are diagnostics. FrameCalc is an educational workbench. It is not for medical, nuclear-safety, radiation-protection, or engineering sign-off. Fusion and IEC estimates are models, not device predictions. Accuracy · Legal