摘要
在3种不同摇摆周期(8、12、16s)和3种不同摇摆角度(10°、15°、30°)下,对内壁光滑的窄矩形通道内的单相阻力特性进行了实验研究。经实验研究发现,摩擦阻力系数随时间变化有明显的周期性。雷诺数越大,摩擦阻力系数的波动幅值越小,平均值也越小。在任意时刻,摩擦阻力系数的波动幅值随摇摆角加速度的增大而增大。
Experimental studies of single-phase pressure drop in narrow rectangular channel under rolling motion were carried out. The rolling periods were 8, 12, 16 s, and the rolling angles were 10°, 15°, 30°. Experimental results show that the frictional factors periodically fluctuate with time. The amplitude and average value of frictional factors decrease with the increasing of Reynolds numbers. At any moment, the transi- ent frictional factors increase with the increasing of rolling angular acceleration.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2012年第3期294-298,共5页
Atomic Energy Science and Technology
基金
哈尔滨工程大学基础研究基金资助项目(HEUFT07066)
关键词
摇摆
阻力特性
摩擦阻力系数
rolling
pressure drop characteristics
frictional factor
