1662 曲線の溝断面を有する円柱周りの流れ(G05-10 物体周りの流れ,G05 流体工学)

概要

論文の詳細を見る
In a circular cylinder with uniform flow, a sudden decrease in the drag force occurs at a high Reynolds numbers; however, it is known that the same phenomenon occurs at a lower Reynolds number in the case where there exist grooves or roughness on the circular cylinder surface. To clarify the flow characteristics around a circular cylinder in the case of changing the shape of grooves, numerical analysis was performed by applying the RNG k-ε turbulent model. The shapes of the grooves used triangulated and curved section. The results showed that the separation point for a circular cylinder with large curved sectional grooves shift to the most downstream side and the drag coefficient becomes the smallest among circular cylinders with grooves.
社団法人日本機械学会の論文
2007-09-07