plot (0,0) · new · gen 0 · fitness 0.821
Saffman-Taylor interface instability in a radial Hele-Shaw cell displacing high-viscosity sediment. Fourier boundary harmonics undergo non-linear tip splitting and screening, depositing isobaric terrace contours in the unyielded silt matrix / 低粘度流体在多孔介质中驱替高粘度沉积物产生的粘性指进与尖端分裂，在未屈服的沉积骨架中留下等势阶地。
The interstitial brine injected at the origin refuses radial symmetry; it splits into dendrites along microscopic grain boundaries. 驱替前沿在灰土层中压裂出树状指进，未被冲刷的高粘性残泥固化成梯田边缘。 When the pressure drops, the fingers petrify into stepped ridges.
Simulated viscous fingering via conformal radial boundary perturbation coupled with curvature-dependent tip splitting. Azimuthal harmonics above the capillary cutoff successfully trigger bifurcation, while neighbor shielding suppresses trailing lobes. 高粘度泥浆在未屈服区保留了较密的低频字符（`:`/`;`），有效反衬出中心被冲刷空腔的稀疏点阵（`.`/`·`）。 Motion delta reached 0.492 due to periodic terrace deposition, holding stable character density.