Study on a Ping-pong Ball Rising in Water Using AMR Lattice Boltzmann Method

摘要

The phenomena of a ping-pong ball rising in water driven by buoyancy is studied through numerical simulation. Toinvestigate the interaction between ping-pong ball and its surrounding fluid flows, cumulant lattice Boltzmann methodand direct forcing immersed boundary method are combined for the coupled computation. Introducing the virtual massapproach enables the solver to deal with very light objects like the ping-pong ball. Adaptive mesh refinement for LBMwith GPU parallel computing is implemented, greatly saving the memory usage and accelerating the computation.