407 乱流中の球形粒子に対する抵抗増加メカニズムに関する考察(OS-2 熱流体の数値シミュレーション(2),研究発表講演)

概要

論文の詳細を見る
A direct numerical simulation (DNS) is used to study the increase of the drag coefficient on a spherical particle in turbulence. The particle diameter is about 8 times the Kolmogorov scale. The particle Reynolds number is up to 300, and the turbulence Reynolds number based on Taylor scale is about 50. In the case of the particle Reynolds number O[10], the rotational particle actual has larger drag and horizontal motion than the irrotational particle. The flow is divided into different structure types using an algorithm developed by Kevlahan. In the eddies, it is obvious that the rotational particle has stronger reaction from fluid turbulence than the irrotational particle does.
社団法人日本機械学会の論文
2005-03-18