Dynamic behaviours of horizontal gas-liquid pipes subjected to hydrodynamic slug flow: Modelling and experiments

Abstract The dynamic behaviours of gas-liquid pipes are difficult to predict because of the complex flow characteristics of gas-liquid two-phase flow and fluid-structure interactions. In this paper, a dynamics model capable of describing the characteristics of hydrodynamic slug flow and fluid-structure interactions involving centrifugal force and Coriolis force is presented to investigate the dynamic behaviours of horizontal pipes subjected to hydrodynamic slug flow. The motion equation is solved using the finite element method. Experiments are performed to measure the characteristics of slug flow and dynamic behaviours of horizontal pipes and to validate the theoretical results. The motion of pipes under different two-phase flow parameters are simulated, and some interesting and unexpected results are presented. Finally, the cumulative effect of fluid-structure interactions and slug characteristics on the dynamics of the system is discussed. This study is helpful for understanding the complicated dynamic behaviours of gas-liquid pipes and promoting pipeline safety.

[1]  S. S. Chen,et al.  Flow-Induced Vibration of Circular Cylindrical Structures , 1987 .

[2]  M. Ishii,et al.  Experimental study of internal two-phase flow induced fluctuating force on a 90° elbow , 2012 .

[3]  M. Païdoussis.  Fluid-Structure Interactions: Slender Structures and Axial Flow , 2014 .

[4]  Gong Zhi-lin.  Explosion Analysis of the Steam Pipeline , 2010 .

[5]  A. Dukler,et al.  A model for predicting flow regime transitions in horizontal and near horizontal gas‐liquid flow , 1976 .

[6]  M. J. Pettigrew,et al.  Fluidelastic instability of flexible tubes subjected to two-phase internal flow , 2004 .

[7]  Thomas J. Hanratty,et al.  Prediction of the transition from stratified to slug and plug flow for long pipes , 2002 .

[8]  M. Païdoussis,et al.  Dynamic stability of pipes conveying fluid , 1974 .

[9]  Liu Chang,et al.  Numerical investigation of dynamic response of a pipeline-riser system caused by severe slugging flow , 2018 .

[10]  Leonardo Chica.  FSI Study of internal Multiphase Flow in Subsea Piping Components , 2014 .

[11]  Qian Wang,et al.  Unified Model for Gas-Liquid Pipe Flow via Slug Dynamics—Part 2: Model Validation , 2003 .

[12]  Fumio Hara.  Two-Phase-Flow-Induced Vibrations in a Horizontal Pulping System , 1976 .

[13]  D. J. Nicklin,et al.  Two-phase bubble flow , 1962 .

[14]  J. P. Brill,et al.  Unified model for gas-liquid pipe flow via slug dynamics: Part 1: Model development , 2003 .

[15]  Mingyan Liu,et al.  Effects of fluidized solid particles on vibration behaviors of a graphite tube evaporator with an internal vapor–liquid flow , 2016 .

[16]  Chuang Wen,et al.  CFD modeling of particle behavior in supersonic flows with strong swirls for gas separation , 2017 .

[17]  Jens Honore Walther,et al.  CFD modelling of condensation process of water vapor in supersonic flows , 2017 .

[18]  Jian Su,et al.  Dynamic behavior of pipes conveying gas–liquid two-phase flow , 2015 .

[19]  Thomas J. Hanratty,et al.  Mechanism of slug formation in downwardly inclined pipes , 2000 .

[20]  Michael P. Païdoussis,et al.  Dynamics of Tubular Cantilevers Conveying Fluid , 1970 .

[21]  Yuxing Li,et al.  Multiphase mixture model to predict temperature drop in highly choked conditions in CO2 enhanced oil recovery , 2016 .

[22]  M. J. Pettigrew,et al.  Vibration Excitation Forces Due to Two-Phase Flow in Piping Elements , 2007 .

[23]  Carl M. Larsen,et al.  Flexible Riser Response Induced by Combined Slug Flow and Wave Loads , 2013 .

[24]  R. Clough,et al.  Dynamics Of Structures , 1975 .

[25]  Shuichiro Miwa,et al.  Two-phase flow induced vibration in piping systems , 2015 .