升沉条件下矩形窄缝通道单相等温流动摩擦阻力特性研究

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Study on Friction Resistance Characteristics of Narrow Rectangular Channel Single-Phase Isothermal Flow in Heaving Motion

CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 采用实验和理论分析相结合的方法研究升沉条件下矩形窄缝通道以水为介质的单相等温流动摩擦阻力特性。结果表明,矩形窄缝通道的几何效应体现在层流区;影响升沉条件下矩形窄缝通道摩擦阻力特性的因素是通道入口和出口边界条件;当入口和出口均给定速度边界时,升沉运动对等温流动没有影响,在静止状态获得的摩擦系数计算公式在升沉条件下仍然适用。
- 升沉 /
- 矩形窄缝通道 /
- 单相流 /
- 等温 /
- 摩擦阻力
Abstract: Experimental investigation and physical analysis were carried out on friction resistance characteristics for single-phase isothermal flow in heaving motion.Results indicated that the effect of geometrical features for narrow rectangular channel only appeared in the laminar region.Influence factors of friction resistance characteristics of narrow rectangular channel in heaving motion are channel boundary conditions.The heaving motion have no effects on the isothermal flow if the boundary conditions are only related with the velocity,and the formula for friction resistance calculation obtained in the standstill works well in heaving motion.
- Heaving /
- Narrow rectangular channel /
- Single-phase /
- Isothermal /
- Friction resistance