平板状物体によるチャネル乱流の伝熱促進 : 流動特性(流体工学,流体機械)

概要

論文の詳細を見る
Experiments have been performed for a turbulent channel flow obstructed with a flat body. Thickness of the body is 5 mm and 10 mm, and the clearance between the wall and the body is changed in three steps. The local heat transfer coefficient, wall static pressure and wall shear stress are measured. A split hot film probe is used for the measurements of velocity profiles and turbulent intensities. When the clearance is large, the vortex shedding is observed, however the vortex shedding disappears at the small clearance. Enhancement of the heat transfer coefficient at the small chearance relates to the increase of turbulent kinetic energy in the vicinity of the wall. On the other hand, at large clearance it relates to the increase of the streamwise velocity near the wall.
社団法人日本機械学会の論文
2003-12-25