Experiments of Air-pocket Movement in an 18.2°downward 240-mm Conduit

机译：18.2°下向下240毫米导管的空气口袋运动试验

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摘要

Experiments are carried out in a test rig, consisting of a Plexiglas pipe with an inner diameter of 240 mm and an inclination of 18.2°, to investigate air-water two-phase flows in conjunction with bottom spillways. Results show that the critical velocity, which is the minimal water velocity to start moving an air pocket, in the rough pipe, is independent of the air-pocket volume; in the smooth pipe it doesn't increase with increasing diameter as much as the previous researchers indicated. Pipe roughness doesn't affect the velocity of the air-pocket when it moves upstream in the downward inclined pipe.

机译：实验在试验台中进行，由内径为240mm的有机玻璃管组成，倾斜度为18.2°，以与底部溢溢溢出的水管两相流量研究。结果表明，在粗管中，临界速度是开始移动气袋的最小水速，与气口袋无关;在光滑的管道中，随着前面的研究人员所指出的那样，它不会增加。管道粗糙度不会影响气口的速度，当它在向下倾斜管上游移动时。

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《International Conference on Modern Hydraulic Engineering》|2013年||共5页
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作者
Ting Liu; James Yang;
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原文格式 PDF
正文语种
中图分类水资源调2查与水利规划;
关键词
two-phase flow; air pocket; critical velocity; roughness effect; diameter effect;

机译：两相流;气袋;临界速度;粗糙效果;直径效果;

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Experiments of Air-pocket Movement in an 18.2°downward 240-mm Conduit

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