Numerical analysis of the two-phase flow characteristics in vertical downward helical pipe. (May 2017)

• Record Type: Journal Article
• Authors: Liu, Xianfei; Zhao, Donghai; Liu, Yifeng; Jiang, Shuai; Xiang, Hongzhi
• Is Part Of: International journal of heat and mass transfer. Volume 108:Part B(2017)
• Page Start: 1947
• Page End: 1959
• Publication Date: 2017-05
• Subjects: Two-phase flow -- Helical pipe -- Pressure drop -- Inlet sectional liquid holdup; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Electronic journals; 621.4022
• DOI: 10.1016/j.ijheatmasstransfer.2017.01.056
• Languages: English
• ISSNs: 0017-9310

Abstract

Highlights: Eulerian multiphase flow model is validated to calculate the two-phase flow in helical pipes. Development of pressure fields and liquid distribution along the helical pipe are obtained. Effects of coil structures and liquid holdup on pressure drop are studied. The correlation developed predicts the two-phase frictional factor in helical pipe. Abstract: In this research, the Eulerian multiphase flow model is validated to calculate the two-phase flow in vertical downward helical pipes. The development of pressure fields and liquid distribution along the helical pipe are presented. The results shows that the curvature, torsion and liquid holdup exert great effect on the distribution of the pressure field and liquid holdup distribution in the helical pipe. In addition, it is found that the two-phase frictional pressure drop relates to the curvature and torsion of helical pipe, and that the inlet sectional liquid holdup also has great effect on the pressure drop. The correlation developed predicts the two-phase frictional factor in helical pipe with acceptable statistical accuracy.