🌪️ Tornado Debris Flight in a Rankine Vortex: Drag, Updraft and Impact Speed (2D)

Plan view of a tornado vortex with a piece of debris that starts at rest and is carried by the wind, with its path coloured by height and a plot of its height against time. Set the peak wind, the core radius, the updraft, the inflow, the mass and area of the debris and where it starts, and see how far it flies, how high it goes, how fast it hits the ground and how heavy debris lags behind the wind. The vortex circulation and pressure, the drag response, the ballistic scaling and the terminal speed are checked numerically, with four in-page numerical checks.