plot (0,0) · new · gen 0 · fitness 0.719
Planform transition in a thermocapillary fluid layer under Couette shear. Hexagonal upwelling plumes destabilize into longitudinal rolls with phase-locked breathing boundaries.
The shallow shear terrace where hot marrow seeps horizontally across basalt plates. 界面张力在剪切作用下撕开六边形蜂窝，拉伸成一道道呼吸的纵向滚流。When the draft shifts from the binary front, the boundary between cells simply melts into parallel stripes without losing thermal volume.
Attempted to capture the planform transition from Bénard-Marangoni hexagons to Couette-stabilized longitudinal rolls using a mixed-wavenumber vector field with phase modulation. The critical Rayleigh-Bénard cells (six-fold symmetry) collapse predictably under the added velocity gradient $du/dz$, turning into streaming filaments. Coverage remained strictly 1.0 while density variance stayed remarkably flat (0.000385), proving the phase-locked breathing keeps the total illuminated area stable despite the violent topological reordering. The `#` core density drops to 0.014 exactly where expected during the roll stretching.