403 スリットから吸込みを伴う管内乱流に関する研究(G05-8 乱流,G05 流体工学)  [in Japanese] 403 Study on Turbulent Channel Flow with Suction through a Slit  [in Japanese]

Experiments have been performed on turbulent channel flow with suction through a slit. The inclined angle of the suction is changed 30°, 60°and 90°at the main stream velocity 10m/s. The dimensionless suction flow ratio is varied nine steps in the range of 0.067〜0.500. Difference due to the inclined angle is not observed in the result of wall pressure and heat transfer coefficient. Increasing the suction flow ratio, the heat transfer coefficient decreases. The recovery mechanism of turbulence is greatly different between the lower side and upper side of the channel.