Pressure loss of conveying pipeline of natural gas hydrate

被引：0
|
作者：
Xu H. [1 ,2 ]
Hu W. [1 ]
Yang F. [1 ,2 ]
机构：
[1] School of Mechanical and Electrical Engineering, Central South University, Changsha
[2] State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2019年 / 50卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Gas hydrates; Hydraulic transmission; Pressure loss; Simulation;
D O I：
10.11817/j.issn.1672-7207.2019.02.008
中图分类号：
学科分类号：
摘要：
To study the influence law between pressure loss of conveyor system and parameters of hydraulic transmission system for cutter-suction mining in submarine natural gas hydrate exploitation, such as diameter, velocity, volume fraction and particle size, and to determine the reasonable selection of the parameters, the three-dimensional flow field model of pipeline was established, and the method of controlling variables, the computational fluid dynamics theory and Fluent simulation software were used for numerical analysis in the solid liquid two-phase flow field of the pipeline. The results show that the pressure loss gradient of the conveying system decreases with the increase of the pipe diameter, and when the diameter of the pipe increases to 0.4 m, the effect of increasing the pipe diameter on pressure loss gradient is smaller and smaller. The pressure loss gradient decreases first and then increases with the increase of the flow velocity of the slurry, and there is an optimal velocity, which is between 2.5 m/s and 4.0 m/s, and the larger the particle size and volume fraction, the greater the corresponding optimal velocity. The pressure loss gradient increases linearly with the increase of volume fraction. The pressure loss gradient increases with the increase of particle size, but the increase is small. © 2019, Central South University Press. All right reserved.
引用
收藏
页码：304 / 310
页数：6
相关论文
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