摘要
对摇摆条件下矩形通道内的层流特性进行了理论分析。推导出摇摆条件下的速度和温度关系式,并由此得到传热系数关系式。Nu的平均值与位置有关;瞬时Nu的波动振幅随Pr的增加而增加;瞬时Nu与摇摆运动之间的相位差为45°。
The laminar flow characteristics in a rectangular channel in rolling motion is investigated theoretically.The correlations of velocity and temperature in rolling motion are derived.And the heat transfer correlation is also obtained.The Nusselt number is a function of the position,while the oscillating amplitude of transient Nusselt number increases with the increase of Prandtl number.There is an initial phase difference of 45 degree between the transient Nusselt number and the rolling motion.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2010年第6期70-74,共5页
Nuclear Power Engineering
关键词
摇摆
层流
矩形通道
传热
Rolling
Laminar flow
Rectangular channel
Heat transfer
