パーシャルセル法を用いた二輪車周りの熱流動解析

摘要

On an application of CFD (Computational Fluid Dynamics) for the development of motorcycles, this paper, at first, describes an ideal image of CFD usage, which is practical use in an early stage of design process by motorcycle developers themselves. As its implementation, the Partial Cells in Cartesian coordinate method is described. Merits of its method are a short computation time and an automatic mesh generation for complicated shapes accompanied with enough accuracy. And a recent activity of CFD was demonstrated by an application to an air-cooled motorcycle engine development. Currently, CFD application is expected for developing a new concept motorcycle.%1980年代後半，将来の自動車開発では高度な性能予測rnが求められる時代がくる，と考えた．しかし当時はまだrn三次元のCFD（Computational Fluid Dynamics）計算それrn自体が困難な時代であった．そこでまず，CFD活用のあrnりたき姿をイメージした．そして，複雑形状を楽に扱うrnことを重要視することとした．