Real-Time Crystallization Control with Inline PAT — 2D Cross-Section

This 2D companion models the same cooling batch crystallizer as the 3D version, seen as a side-view slice through the vessel: an inline probe reads solution supersaturation in real time, and a closed-loop controller throttles the cooling ramp to hold that supersaturation near a target instead of letting it run open-loop. Nucleation and growth are modeled as competing rate laws driven by the live supersaturation ratio S = C/C*(T), with every crystal's growth consuming solute mass and feeding back into the measured signal — exactly the loop a real Focused Beam Reflectance Measurement or Raman probe closes on a plant crystallizer. Toggle PAT feedback on and off with the same cooling-rate and seed-loading settings to see how open-loop cooling nucleates a wide swarm of small crystals while closed-loop control grows a narrower, coarser population. Drag the canvas to pan and scroll (or pinch) to zoom into the crystal bed.