open access

https://hdl.handle.net/2115/64607

Physical Simulation Environment for Motion Computation in Fluid : Deciding a Shape of da Vinci's Spiral Wing by Particle Swarm Optimization

日本語

particle swarm optimization

2012

公益社団法人 精密工学会

精密工学会誌

78(4)

348-353

This paper describes a method of computing motion in fluid and an experiment using it. Motion of an object is computed by a physical simulation environment. It is constructed of a physical engine, which processes computation of rigid body dynamics. Computation of fluid dynamics is additionally implemented to the environment so that motion in fluid is simulated faster than other computational methods. The environment read easily the three dimensional mesh data, which is commonly used by CAD systems, then computes and visualizes motion immediately. The experiment is optimizing shapes of Leonardo da Vinci's spiral wings. Parameters of the spiral wing are optimized by a particle swarm optimization (PSO) or a sequential search so that the wing flies higher under two conditions. PSO usually find better parameters than a sequential search and do about sixty times as faster as a sequential search. The environment computes virtual motion for twenty seconds in real time of one second. The shapes given by an optimization are difference each other according to the given conditions, and proper from viewpoint of fluid dynamics.

学術雑誌論文

Version of Record

0912-0289

1882-675X

AN1003250X