0304 離散要素モデルを用いた壁面高分子滲出による乱流摩擦抵抗の低減効果(OS3-1 流れの抵抗低減,オーガナイズドセッション)

概要

論文の詳細を見る
Effect of blowing polymer solution from a wall upon drag reduction rate is examined by using a discrete element model (spring-dumbbell model). The discrete element model is used to investigate the mechanism of drag reduction by addition of small amount of polymer in turbulent wall-bounded flow of Newtonian fluid by direct numerical simulation. By using the discrete-element model, the spatial concentration of the polymer can be obtained numerically. It is found that the discrete elements are advected from the wall mainly to the buffer layer, leading to drag-reduction effect by decreasing the weighted Reynolds shear stress in the same layer.
社団法人日本機械学会の論文
2009-11-06