强烈段塞流特征参数试验研究

为了寻求强烈段塞流特征参数的变化规律,在高4 m、内径50 mm的管线中利用双平行电导探针测试了强烈段塞流的持液率信号,并用互相关法对其进行了分析,得到了强烈段塞流的液塞速度、液塞长度随气、液相折算速度及下倾管倾角的变化规律。结果表明,当气相折算速度恒定时,随着液相折算速度的增大,液塞速度、液塞长度均线性增大;当液相折算速度恒定时,随着气相折算速度的增大,液塞速度线性增大,而液塞长度呈双曲型减小;当气、液相折算速度恒定时,随着下倾管倾角的增大,液塞速度、液塞长度都稍有增大。

Experimental study of characteristic parameters of severe slugging in riser-pipe systems

In order to find the rule of characteristic parameters of severe slugging in the riser-pipe systems,the signal of liquid holdup was detected using the double parallel conductance probes in a vertical pipeline of 4 m in height and 50 mm in inner diameter.The rule of characteristic parameters of severe slugging was disclosed using the cross-correlation method.The experimental results show that when gas superficial velocity is constant,the liquid slug velocity and the liquid slug length will increase linearly with the increase of liquid superficial velocity.When liquid superficial velocity is constant,the liquid slug velocity will increase linearly with the increase of gas superficial velocity,while the liquid slug length will decrease by hyperbola.When gas superficial velocity and liquid superficial velocity are constant,the liquid slug velocity and the liquid slug length will increase slightly as the inclination angle of the pipeline increases.