摘要
建立了摇摆条件下矩形管内层流流动模型,推导出了速度分布表达式,分析了摇摆运动对矩形管内层流流动的影响。离心力的作用在系统中被相互抵消。切向力会引起速度波动,速度波动周期因而与摇摆周期一致。切向力不会改变平均速度分布,因而不会改变层流平均摩擦阻力系数。在矩形管内的层流流体中也会出现Richardson效应。
The laminar flow model in rectangular tubes at rolling motion was developed and the velocity correlation was derived.The effect of rolling motion on laminar flow in rectangular tubes was investigated.The effect of centrifugal force is counteracted in the system.The velocity oscillation is caused by tangential force,so the oscillation period of velocity is the same with the rolling period.However,the tangential force does not effect on the average velocity profile and frictional resistance factor.As to the laminar flow in rectangular tubes,the Richardson effect can also be seen.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2010年第6期671-675,共5页
Atomic Energy Science and Technology
关键词
摇摆
矩形管
速度
rolling
rectangular tube
velocity
