2024-04-19T14:37:49Z
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2024-02-20T05:01:20Z
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円管内を移動する仕切板後方における輸送現象 : 管壁の流体摩擦
Transport phenomena in the flow behind a moving rod fitted in a pipe : shear stress at the wall
松本, 利達
MATSUMOTO, Toshikatsu
上村, 浩
KAMIMURA, Hiroshi
久木崎, 浩二
KUKIZAKI, Koji
重久, 義明
SHIGEHISA, Yoshiaki
松山, 勉
MATSUYAMA, Tsutomu
501
The wall shear stress induced by the flow behind a moving rod fitted in a pipe, were investigated experimentally and analytically. An electrochemical method was used in this experiment. In the turbulent flow region, where Reynolds number based on the tube diameter is above 15900, the measured friction factor of the flow decreases proportionally to the inverse square-root of the distance from the rod. This behavior of the flow near the wall was analogous to that of a laminar boundary-layer flow with negligible pressure gradient. In the laminar flow region where Reynolds number is 10 or less, a good agreement was found between the observed friction factor and the numerically solved one. When Reynolds number is increased from 100 to 1000, the observed friction factor was much greater than that calculated by numerical solution of momentum equation.
departmental bulletin paper
鹿児島大学
Kagoshima University
1987-11
VoR
application/pdf
鹿児島大学工学部研究報告
29
113
120
The research reports of the Faculty of Engineering, Kagoshima University
0451212X
AN00040363
https://ir.kagoshima-u.ac.jp/record/10585/files/AN00040363_v29_p113-120.pdf
jpn