Thermal Spray Splat Formation — 2D Radial Model

A 2D radial cross-section and plan-view simulator of a single thermal-spray droplet impact. Instead of replaying a scripted spreading curve, the splat radius is obtained by numerically integrating a damped-oscillator ODE whose stiffness and damping come from the impact's Reynolds and Weber numbers, so viscous droplets spread smoothly while low-viscosity droplets visibly ring before settling. Mundo's splashing parameter K decides whether independently-simulated ballistic satellite droplets are ejected in the plan view.