Microgravity Water Capture 2D: Vent Vector Field & Droplet Coalescence

This 2D companion models the same spacecraft hygiene problem — free-floating water in microgravity — with a deliberately different computational approach than the 3D scene. The chamber is a genuine 2D disk, the airflow field is drawn directly as a convergent vector field of arrows rather than inferred from a rotating camera, and droplets merge by conserving 2D area (r_new = √(r1²+r2²)) instead of 3D volume. Drag the suction vent around the chamber rim to watch the whole flow field and every droplet's trajectory re-converge live, then flip on gravity to see droplets pool uselessly at the bottom instead of ever reaching the vent. Linked side panels track reclaimed volume over time and the live droplet-size histogram.