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Drainage of liquid from a small circular hole in a vertical wall

机译:从垂直墙壁中的小圆孔排出液体

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摘要

In this work, the initiation and cessation of flow from a hole in a vertical wall was examined. Water, ethylene glycol or isopropyl alcohol was slowly added to polypropylene (PP) or fluorinated ethylene propylene (FEP) containers with a single circular hole in their side wall. If the hole was sufficiently small, liquid rose past the hole. No liquid flowed through the hole until a critical height was reached. Flow generally ceased before the level of the liquid reached the bottom of the hole. The onset and cessation of flow was successfully modeled as a balance between the hydrostatic pressure in the bulk liquid and the Laplace pressure of the air-liquid interface bulging from the hole.
机译:在这项工作中,研究了垂直壁孔中流体的起始和终止。将水、乙二醇或异丙醇缓慢添加到聚丙烯(PP)或氟化乙烯丙烯(FEP)容器中,容器侧壁上有一个圆孔。如果孔足够小,液体就会从孔中溢出。在达到临界高度之前,没有液体流过孔。在液体到达孔底之前,流动通常停止。流动的开始和停止被成功地模拟为体积液体中的静水压力和从孔中凸出的气液界面的拉普拉斯压力之间的平衡。

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