摇摆状态下窄通道内单相阻力特性实验研究

Single-phase Flow Characteristics in Narrow Channel Under Rolling Motion

1.
National Defense Key Subject Laboratory for Nuclear Safety and Simulation Technology,Harbin Engineering University, Harbin 150001, China
2.
National Key Laboratory of Bubble Physics and Natural Circulation, Nuclear Power Institute of China, Chengdu 610041, China

摘要: 在3种不同摇摆周期(8、12、16 s)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。
- 摇摆 ,
- 阻力特性 ,
- 摩擦阻力系数
Abstract: 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 transient frictional factors increase with the increasing of rolling angular acceleration.
- rolling ,
- pressure drop characteristics ,
- frictional factor

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