大学化学 >> 2016, Vol. 31 >> Issue (11): 83-88.doi: 10.3866/PKU.DXHX201604031

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毛细上升公式的推导方法及其在方形毛细管中的应用

赵留鹏,张树永*()   

  • 发布日期:2016-11-30
  • 通讯作者: 张树永 E-mail:syzhang@sdu.edu.cn

Equation Deduction for Capillary Rise and the Application in Square Capillary

Liu-Peng ZHAO,Shu-Yong ZHANG*()   

  • Published:2016-11-30
  • Contact: Shu-Yong ZHANG E-mail:syzhang@sdu.edu.cn

摘要:

归纳了文献中导出圆形毛细管液柱上升高度计算公式的方法;明确指出了采用受力分析导出毛细上升高度公式时,对伸展力进行简化处理的原理以及其中所隐含的基本假设;从流体力学角度对液柱上升速率和高度进行了讨论。分3种情况对液柱在方形毛细管中上升的现象进行了系统分析,得出了一些重要的结论。

关键词: 毛细管, 毛细现象, 附加压力, 方形毛细管

Abstract:

The two main reported approaches for deducing the capillary rise equation were summarized.The simplification principle and the assumption for force analysis approach were explained.By taking the hydrodynamics, the flow rate and the height of liquid in capillary were further discussed.For liquid rise in square capillary, three situations were analyzed with some important conclusions reached.

Key words: Capillary, Capillary phenomenon, Additional pressure, Square capillary

MSC2000: 

  • G64