竖直管静止与流动液体中弹状气泡运动特性分析
首发时间:2009-04-21
摘要:本文对竖直管静止液体和流动液体内弹状气泡的运动特性进行了实验研究。对静止液体中弹状气泡的运动规律与压差波动曲线的关系进行了解释说明,分析了入口压力变化对弹状气泡上升速度的影响;在流动状态下,分析了液体流量和气体流量对弹状气泡上升速度的影响。结果表明,在静止液体中弹状气泡的上升速度不受入口压力大小的影响;在湍流流动状态下,弹状气泡上升速度随气液两相混合流速的增加而增大。在此基础上,给出湍流流动状态下弹状气泡上升速度关系式,并与传统经验公式进行了对比,发现与经验公式拟合较好。
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Analysis of flow characteristics of slug bubble in stagnant and flowing liquid through vertical tube
Abstract:The experimental research about the slug flow characteristics in stagnant and flowing liquid through vertical tube were carried out. The relation between the slug flow and the general trend of pressure signal cure in stagnant liquid was explained, and the impact of the entrance pressure on the slug bubble rise velocity was analyzed. Besides,the effect of different water and gas flow rate on slug bubble rising velocity in the flowing condition was analyzed. It was found that the different entrance pressure did not affect the slug bubble speed under the stagnant condition, and the increase of slug bubble rise velocity mainly depends on the increase of the gas-liquid two-phase mixture velocity in the turbulent state. Moreover, the slug bubble velocity expression was given in the turbulent flow state, which fit the empirical formula well by contrasting.
Keywords: vertical tube slug flow stagnant liquid flowing liquid flow characteristics
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No.3160046315412403****
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