下倾管段塞流特征参数试验研究  

Experimental study of slug flow characterization in a downward inclined pipeline

作　　者：王海琴[1] 何利民[1] 罗小明[1] 

机构地区：[1]中国石油大学储运与建筑工程学院,山东东营257061

出　　处：《中国石油大学学报（自然科学版）》2007年第3期109-113,共5页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金重点项目(50676109)

摘　　要：为揭示下倾管段塞流的流动规律,在内径50 mm、长27.43 m的不锈钢多相流试验环道上对下倾管段塞流的特征参数进行了试验研究。采用差压波动信号相关分析技术,分析了气液相折算速度、混合速度以及管线倾角变化对液塞速度、平均液塞长度、最大液塞长度以及液塞频率的影响。结果表明,随混合速度的增加,液塞速度不是线性增加,而且对管线倾角的变化不敏感;平均液塞长度随着混合速度增大呈先减后增的变化趋势,但随着倾角的变化没有明确的规律,而当Froude数大于16时,管线倾角对最大液塞长度的影响减小;液塞频率随气、液相折算速度增加而单调增加,且倾角越大,液塞频率越小。In order to find out flow characteristics of slug flow in downward inclined pipeline, the experimental investigation was carried out using the loop of 50 mm in diameter and 27. 43 m in length. The rule of characteristic parameters of slug flow in downward inclined pipeline was disclosed using cross-correlation method of differential pressure signals. With the increase of mixture velocity, liquid slug velocity does not increase linearly and is insensitive to downward inclination angle. Mean liquid slug length decreases firstly but next increases as the mixture welocity increases, and no clear tendency can be showed with changes of inclination angle. With Froude number more than 16, the downward inclination angle influences slightly on the max liquid slug length. Liquid slug frequency increases linearly with the increase of liquid superficial velocity and gas superficial velocity, and liquid superficial velocity has larger influence on the liquid slug frequency than gas superficial velocity.

关 键 词：下倾管 差压相关分析 液塞速度 液塞长度 液塞频率 试验 

分 类 号：O359[理学—流体力学]