Abstract
Motion of a spinning ping-pong ball is strongly affected by the Magnus effect. Since airflows around a ping-pong ball, such as Smash, are turbulent with a high Reynolds number, it is necessary to carry out large scale CFD simulations. We have developed a large-eddy simulation code based on lattice Boltzmann method for GPU supercomputers. Coherent-structure Smagorinsky model is applied to turbulent phenomena, and is suitable for large-scale calculation. Our code achieved fairly good performance by using the TSUBAME supercomputer. In this research, we examine a large-eddy simulation for a motion of the ping-pong ball in table tennis. By executing this large-scale computation, details of airflows around the ping-pong ball were revealed.
