论文部分内容阅读
本文使用水溶性聚丙烯酰胺减阻剂,研究了减阻剂在水平、倾斜、垂直三种管型中对气液两相流的减阻效应。每段有机玻璃管长2 m,内径为40 mm。比较研究了不同管型减阻前后两相流阻力与折算气速的关系,研究了Chisholm关系式中系数C随液相减阻效应的变化。结果表明,不同管型影响减阻剂对两相流的减阻效应。水平管减阻率最大,达到47%;倾斜管减阻率次之,为30%;垂直段减阻率最小,仅为5%。Chisholm关系式中系数C随液相减阻效应的增大而减小。
In this paper, water-soluble polyacrylamide drag reducing agent was used to study the drag reduction effect of drag reducing agent on gas-liquid two-phase flow in horizontal, inclined and vertical tube types. Each plexiglass tube length 2 m, an inner diameter of 40 mm. The relationship between the resistance of two-phase flow and the converted gas velocity before and after the different tube-type drag reduction was comparatively studied, and the variation of the coefficient C with the liquid-phase drag reduction effect in the Chisholm relationship was studied. The results show that the drag reduction effect of different tube types on two-phase flow is affected by different tube types. The drag reduction rate of the horizontal pipe is the largest, reaching 47%; the drag reduction rate of the inclined pipe is the second, 30%; the drag reduction rate of the vertical section is the smallest, only 5%. Chisholm relationship coefficient C decreases with the liquid drag reduction effect increases.