摘要：In this paper, Euler models suitable for hydrate slurry flow were established based on the particle dynamics theory. The results showed that the distribution of the velocity, particle concentration and turbulent kinetic energy in the curved pipe was more asymmetrical than that in the straight pipe due to the continuously changing flow field direction. The velocity, turbulent kinetic energy and particle concentration all increased with the increase of inlet velocity. The particle concentration gradient increased with the increase of the inlet particle volume fraction. The increase of particle size led to the increase of velocity heterogeneity and concentration gradient. The pressure drop factor along the pipeline increased with the increase of velocity, particle concentration and particle size, the pressure drop factor across the pipeline of 1.2 m/s was 78.08% higher than 0.5 m/s. It was found that the change of flow direction or the connection of different pipeline structure was the danger point of pipeline aggregation. Finally, based on the grey correlation analysis, the fluctuation of pressure drop factor was most affected by particle size, followed by particle concentration and velocity. The study provided reasonable suggestions and measures for practical pipeline transportation technology to avoid operational risks.

关键字：Natural gas hydrate slurry; Numerical simulation; Velocity distribution; Hydrate concentration distribution; Turbulent kinetic energy distribution; Pressure drop variation

ISSN号：0016-2361

卷、期、页：卷: 316

发表日期：2022-05-15

影响因子：6.609000

期刊分区（SCI为中科院分区）：二区

收录情况：SCIE（科学引文索引网络版）,EI（工程索引）

发表期刊名称：FUEL

参与作者：吕晓方,张杰,柳扬,马千里,徐家文,周诗岽

第一作者：宋尚飞,史博会

论文类型：期刊论文

论文概要：吕晓方,张杰,柳扬,马千里,徐家文,周诗岽,宋尚飞,史博会，Simulation study of natural gas hydrate slurry flow characteristics in a high-pressure flow loop，FUEL，2022，卷: 316

论文题目：Simulation study of natural gas hydrate slurry flow characteristics in a high-pressure flow loop