水平管段塞流持液率的试验统计分析  

Statistical analysis about liquid holdup of slug flow in horizontal pipelines

作　　者：赵越超[1] 李志彪[2] 王涛[3] 何利民[4] 宋永臣[1] 

机构地区：[1]大连理工大学能源与动力学院 [2]中国科学院力学研究所 [3]中海石油研究中心 [4]中国石油大学(华东)储运与建筑工程学院

出　　处：《中国海上油气》2007年第4期285-288,共4页China Offshore Oil and Gas

摘　　要：对水平管段塞流持液率进行了试验研究。通过对试验结果的统计分析可以得出:①可以利用段塞流持液率的波动情况来确定液塞频率。②在段塞流动中,当气相折算速度和液相折算速度相差不大时,持液率概率密度函数呈双峰分布;当液相折算速度不变时,随着气相折算速度的增大,持液率概率密度函数第2峰值逐渐减小,直至消失而变为单峰分布;利用这一特征可初步确定段塞流动中气、液相流量相对大小。③折算速度的变化会引起液塞持液率的变化,液塞持液率随气相折算速度的增大而减小,随液相折算速度的增大而增大。Slug flow in horizontal pipes is experimentally investigated in order to study the characteristics of liquid holdup. Through the statistical analysis of the test results, it was found that we could obtain the liquid slug frequency from the fluctuation of the slug liquid holdup. When gas superficial velocity was about equal to liquid superficial velocity, the probability density function （PDF） of liquid holdup had a twin-peaked, when liquid superficial velocity was constant, one of the peaks would fade out and disappear with the increase of gas superficial velocity. Through using the characteristics, the relative size of gas and liquid superficial velocity can be set initially. Slug liquid holdup would change with the gas or liquid superficial velocity. It would decrease with the increase of gas superficial velocity and increase with the increase of liquid superficial velocity.

关 键 词：水平管 段塞流 持液率 试验结果 统计分析 概率密度函数 

分 类 号：O212[理学—概率论与数理统计]