PIV計測と数値解析による気管支内流れの検討

抄録

Flow in human bronchus was experimentally and numerically investigated. Curved pipe was connected bronchial entrance to simulate human pharynx. The flow around the first branch of the bronchus was examined by experiments and numerical simulation. In the experiment, velocity distribution was measured by PIV. In numerical simulation, three-dimensional RANS calculation was performed. Separated flow and flows toward two branches are confirmed by experiments in the first branch region. Cross-sectional distributions of turbulent kinetic energy and pressure was obtained by numerical simulation. The effects of Dean vortices on these flow structure were investigated.