竖直向下大、小支管气相夹带起始可视化研究

严睿豪; 曾春杰; 辛福涛; 张鑫; 孟兆明

doi:10.7538/yzk.2018.youxian.0932

竖直向下大、小支管气相夹带起始可视化研究

哈尔滨工程大学核科学与技术学院,黑龙江哈尔滨150001

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- 刊出日期: 2020-01-19

Visualization Study of Gas Entrainment Initiation of Vertically Downward Large and Small Branch Pipes

College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, China

摘要

摘要: 已有气相夹带起始模型均是基于竖直向下的小支管夹带所得到的，用于分析大支管气相夹带时并不适用。本文基于可视化实验，对竖直向下的大、小尺寸T型管的气相夹带起始点进行对比研究。选择与主管道直径比为0.625和0.1的大、小支管，并采用有机玻璃作为实验管道材料，空气和水为实验工质。其实验现象表明：大、小支管夹带起始均有漩涡，且漩涡现象大致相同，但在大支管条件下会出现气室，夹带气体进入支管后也会在气室下翻腾，且在相同液相折算速度下，大支管夹带起始液位会高于小支管。
- T型管 ,
- 气相夹带 ,
- 大、小支管 ,
- 可视化
Abstract: The existing initial model of gas entrainment is based on vertically downward small branch pipe entrainment, which is not applicable to the analy-sis of gas entrainment of large branch pipe. Based on the visualization experiment, the initiation point of gas entrainment for large and small vertical T pipes was studied and analyzed in this paper. The diameter ratios of branch pipes and main pipes are 0.625 and 0.1. The plexiglass was used as the experimental pipe material, and air and water as the experimental working medium. The experimental results show that there are vortices at the entrainment initiation of large and small branch pipes, and the vortices are roughly same. However, under the condition of large branch pipes, gas chambers will appear, and the entrainment of gas into the branch pipes will also billow under the gas chambers. In addition, under the same liquid phase conversion speed, the entrainment initiation liquid level of large branch pipes will be higher than that of small branch pipes.
- T pipe ,
- gas entrainment ,
- large and small branch pipes ,
- visualization

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参考文献(15)

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竖直向下大、小支管气相夹带起始可视化研究

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Visualization Study of Gas Entrainment Initiation of Vertically Downward Large and Small Branch Pipes

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