Multiphase flow model developed for simulating gas hydrate transport in horizontal pipe

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• 作者：Shuai Tang ; Caixi Liu ; Yuhong Dong
• 关键词：Key wordsmultiphase flow ; hydrate ; slug flow ; phase change
• 刊名：Applied Mathematics and Mechanics
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：37
• 期：9
• 页码：1193-1202
• 全文大小：311 KB
• 刊物类别：Mathematics and Statistics
• 刊物主题：Mathematics
  Applications of Mathematics
  Mechanics
  Mathematical Modeling and IndustrialMathematics
  Chinese Library of Science
  
• 出版者：Shanghai University, in co-publication with Springer
• ISSN：1573-2754
• 卷排序：37

文摘

The hydrate formation or dissociation in deep subsea flow lines is a challenging problem in oil and gas transport systems. The study of multiphase flows is complex while necessary due to the phase changes (i.e., liquid, solid, and gas) that occur with increasing the temperature and decreasing the pressure. A one-dimensional multiphase flow model coupled with a transient hydrate kinetic model is developed to study the characteristics of the multiphase flows for the hydrates formed by the phase changes in the pipes. The multiphase flow model is derived from a multi-fluid model, while has been widely used in modelling multiphase flows. The heat convection between the fluid and the ambient through the pipe wall is considered in the energy balance equation. The developed multiphase flow model is used to simulate the procedure of the hydrate transport. The results show that the formation of the hydrates can cause hold-up oscillations of water and gas.