リブ付き透過性壁面乱流の実験的研究(対流・拡散・渦・波動拡散・熱物質輸送,一般講演)

概要

論文の詳細を見る
To understand the flow physics of separating and reattaching flows over porous walls, PIV measurements are carried out for turbulent rib-mounted permeable channel flows. Two kinds of square cylinder ribs: impermeable (solid) and permeable (porous) ribs, are considered. It is found that in the case of the porous rib, the recirculation behind the rib shifts downstream due to the flow going through the porous rib. From the measured turbulence quantities, the flow downstream the porous rib is confirmed to be far less turbulent than that behind the solid rib. By comparison with the solid channel flow LES, the turbulent intensity and the shear stress are found to be lower than those of the LES due to the bypass flow through the porous bottom wall.
日本流体力学会の論文
2009-09-02