Liquid Films Flowing Concurrently with Air in Horizontal Duct : 1st Report, Flow Pattern
Liquid Films Flowing Concurrently with Air in Horizontal Duct : 1st Report, Flow Pattern
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水平管道中与空气同时流动的液膜：第一份报告，流动模式
DOI：
10.1299/jsme1958.22.1374
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发表时间：
1979
期刊：
影响因子：
--
通讯作者：
K. Sekoguchi
中科院分区：
文献类型：
--
作者：
T. Fukano;K. Ishida;K. Morikawa;Haruo Nomura;Y. Takamatsu;K. Sekoguchi
研究了与水平管道中的气流同时流动的等温薄水膜。在本文中，根据波浪特性，流型被直观地分为六种状态。然后，获得以空气和水流量为轴的这些流型的详细面积图，特别是在低水流量区域，包括管道底面上出现干斑的区域。另一方面，测量随时间变化的膜厚度。然后在流量图上绘制了平均、最大、最小膜厚和波幅等波特性等值线的四张图。这两张图的相关性很强；即，这些地图的比较表明，流动模式可以更粗略地分为三个区域；第一个区域是干燥表面的流动，第二个区域是在界面上观察到统计上相似的小振幅波，最后一个区域是大振幅波在这些小波上传播，速度比小波高。
An isothermal thin water film, flowing concurrently with an air stream in a horizontal duct was investigated. In this paper the flow patterns are classified visually into six regimes according to the wave properties. Then, a detailed area plot for these flow patterns with the air and the water flow rates as the axes is obtained especially in the region of low water flow rate including the zone where the dry patches occurred on the bottom surface of the duct. On the other hand, the time varying film thickness was measured. Then four maps for the isoplathes of wave characteristics such as the averaged, the maximum and the minimum film thicknesses and the amplitude of the waves were drawn on the flow map. The relation of these two maps is strong ; i.e., comparison of these maps shows that the flow patterns can be classified more roughly into three zones ; the first zone for flow with dry surface, the second zone where statistically similar waves to each other with small amplitudes are observed on the interface, and the last zone where large amplitude waves travell on these small waves with higher sped than the small ones.