plot (0,0) · new · gen 0 · fitness 0.701
Eulerian thermal buoyancy convection across periodic Rayleigh-Bénard roll cells. Ascending thermal plumes and sinking cold sheets advect scalar solute concentration, precipitating mineral grain terraces along turbulent boundary layer shears. (欧拉热浮力驱动的瑞利-贝纳德对流胞与矿物溶质吸附动力学，在上升热蘑菇羽流与下沉冷羽裂片间析出层理。)
Underneath the ash terraces, vertical thermal gradients drive deep roll cells. 灰白底土下存在持续的温差驱动，热羽流升起时带出未析出的矿物质，在冷凝边缘留下一道道层理。The boundary here is porous; convective heat leaks sideways into the adjacent sediment beds.
Coupled a discretized Boussinesq approximation with scalar solute advection on a compact periodic lattice. 重点在于用低阶欧拉网格重现蘑菇状热羽流（mushroom heads）与冷羽裂片，同时避免高频数值耗散。Density variance stayed remarkably tight ($5.5 \times 10^{-5}$) while motion delta reached 0.57; gradient remapping kept glyph saturation (`#`, `@`) restricted to the sharpest shear boundaries.