摇摆条件下圆管内层流摩擦阻力的理论研究

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Theoretical Research on Laminar Friction Resistance in Tubes in Rolling Motion

摘要: 建立了摇摆条件下圆管内的层流流动模型,推导出无量纲化的速度表达式,得到摩擦阻力系数关系式。在所有附加力中,只有切向力对流体产生影响,离心力和科氏惯性力的影响相互抵消。平均摩擦阻力系数与非摇摆条件下的表达式相同。摇摆运动对层流摩擦阻力系数的影响随着雷诺数(Re)的增加而逐渐减小。
- 摇摆 /
- 圆管 /
- 层流 /
- 摩擦阻力
Abstract: The model of laminar flow in tubes in rolling motion is established.The dimensionless correlation of velocity is derived,and the correlation of frictional resistance coefficient is also obtained.Of all the additional forces,only the tangential force effects on the flow.The effect of centrifugal and Coriolis forces on the flow is counteracted.The correlation of average frictional resistance coefficient is the same with that of no rolling motion.The effect of rolling motion on frictional resistance coefficient of laminar flow diminishes with the increase of Reynolds number.
- Rolling /
- Tube /
- Laminar flow /
- Frictional resistance