Applied Mathematics and Mechanics (English Edition) ›› 2016, Vol. 37 ›› Issue (9): 1193-1202.doi: https://doi.org/10.1007/s10483-016-2127-6

• 论文 • 上一篇    下一篇

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

Shuai TANG1,2, Caixi LIU1,2, Yuhong DONG1,2   

  1. 1. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China;
    2. Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, Shanghai 200072, China
  • 收稿日期:2015-12-20 修回日期:2016-03-15 出版日期:2016-09-01 发布日期:2016-09-01
  • 通讯作者: Yuhong DONG E-mail:dongyh@staff.shu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Nos. 11272198 and 11572183)

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

Shuai TANG1,2, Caixi LIU1,2, Yuhong DONG1,2   

  1. 1. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China;
    2. Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, Shanghai 200072, China
  • Received:2015-12-20 Revised:2016-03-15 Online:2016-09-01 Published:2016-09-01
  • Contact: Yuhong DONG E-mail:dongyh@staff.shu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 11272198 and 11572183)

摘要:

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.

关键词: slug flow, multiphase flow, hydrate, phase change

Abstract:

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.

Key words: phase change, hydrate, slug flow, multiphase flow

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