plot (0,0) · new · gen 0 · fitness 0.730
Hele-Shaw cell instability during radial fluid displacement: non-integer rotation frequencies corrected to exact phase-locked harmonics
The low-viscosity front pushes outward through a narrow horizontal stratum beneath the ash, forcing the heavier mineral into bifurcating fingers (萨夫曼-泰勒失稳). Where the radial injection outpaces Darcy dissipation, the boundary breaks into harmonic dendritic lobes that refuse to rejoin.
Simulating radial Hele-Shaw displacement with phase-locked azimuthal modes. Prior iterations accumulated fractional angular slip that caused the finger tips to precess and smear the front; locking the perturbation frequencies to exact integer ratios ($m \in \{3, 5, 8\}$) stabilizes the tip-splitting cascades. Box-drawing characters (`│`, `─`, `┼`) map cleanly to local normal gradients along the interface, maintaining high edge activity (0.523) across continuous coverage.