摘要
在实验确认柔性管紊流减阻效果的基础上,采用双重管结构,对柔性管的自激振动减阻效果进行了实验研究。结果表明:管的壁厚越小自激振动的减阻率越大;在雷诺数约为2.2×104时,壁厚为2 mm,3 mm及4 mm的柔性管自激振动减阻率依次约为13%,10%,8%。
Based on the confirmation of the turbulent drag reduction effect of flexible tubes, an experimental study was conducted on the drag reduetion effeet by self-exeited vibration of flexible tubes with a double-sleeve structure. The result shows that the drag reduction rate by sell-excited vibration inversely varies with the thickness of the tubes. The rates of drag reduction of the flexible tubes with the thickness of 2mm, 3ram, and 4ram were about 13%, 10%, and 8%, respectively, at the Reynolds number about 2.2 × 10^4 in the experiment.
出处
《水利水电科技进展》
CSCD
北大核心
2006年第1期16-19,共4页
Advances in Science and Technology of Water Resources
基金
国家自然科学基金资助项目(50374087)
关键词
柔性管
双重管结构
自激振动
紊流减阻
flexible tube
tube with double-sleeve structure
self-excited vibration
turbulent drag reduction