Nicholas Parkyn

Bounded Buoyancy: Added Mass and Two Ceilings for Stable, Accurate Buoyancy in Game and Simulation Engines

Game engines model buoyancy as a force on the body's own mass: weight down, the weight of displaced water up, and damping to taste. For bodies less dense than water this has no ceiling. A table-tennis ball released under water accelerates at 11.4g in the first frame, a foam ball...