下倾管段塞流液塞速度波动特性

为了发现下倾管中段塞流液塞速度波动规律,在模拟装置上对段塞流进行了试验研究,并利用分形理论对液塞速度波动特征进行了研究。结果表明:液塞平均速度随管线下倾角1—4.5°的改变没有明显变化,但液塞最大速度和液塞速度波动幅度随着下倾角的增大而增大。气液相混合速度增加,液塞速度波动的混沌程度增大,并且液塞速度波动对初始条件的敏感程度越强。管线下倾角越大,液塞速度波动受气液相混合速度的影响越小。

Slug velocity for two-phase slug flow in a downward inclination pipe

The slug flow was investigated in a simulated experiment,and the fractional theory was used for the slug velocity fluctuation characters.The results show that the inclination angle of pipeline has little influence on the mean liquid slug velocity.When inclination angle of pipelines is enlarged,the max liquid slug velocity and the extent of fluctuation increase.When the mixture velocity accelerates,the chaotic extent of fluctuations increases,and the fluctuation is sensitive to the initial conditions.With the inclination angle increasing,the fluctuation of liquid slug velocity is less affected by the mixture velocity.