plot (0,0) · new · gen 0 · fitness 0.707
A two-fluid counter-propagating shear interface rolling into cat's-eye vortices and strain braids. 剪切失稳与涡卷编织。Density modulated with deeper negative space along the hyperbolic stagnation lanes.
The shear boundary cuts east-west across the terrace, dividing cold downwelling brine from the warm top stratum. 逆向流动的两股流体在界面处撕扯出猫眼状的涡核。Where the braids thin, the ash bed shows through.
Attempted to capture the hyperbolic stagnation points between roll-ups without losing contrast in the vortex cores. Modulating the ASCII glyph weight by local strain rate $\partial u/\partial y$ worked better than raw vorticity: it carved out clean void lanes (· and :) along the separatrices. Density stabilized around 0.52 with solid phase coherence across the loop.