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Hydraulic transport flow law of natural gas hydrate pipeline under marine dynamic environment
Engineering Applications of Computational Fluid Mechanics ( IF 6.1 ) Pub Date : 2020-02-24 , DOI: 10.1080/19942060.2020.1727774
Hailiang Xu 1 , Wei Chen 1, 2 , Wengang Hu 1
Affiliation  

The work simulates the transport pipeline movement of the marine dynamic environment based on the computational fluid dynamics research method. The present work also studies the influence of the marine dynamic environment on the solid–liquid two-phase flow field in the pipeline. An experimental study on the hydraulic transport flow law of natural gas hydrate pipeline is performed on the experimental platform of deep-sea mining metallogenic system fluctuation. Results show a large disturbance of the transverse swing convection field of pipelines and a small influence of axial vibration. The flow field distribution characteristics in the conveyor pipeline are consistent with the steady-state working conditions when the amplitude of transverse oscillation is less than 0.5 m. When the oscillation amplitude is larger than 2 m, the vibration has a considerable influence on the solid-phase distribution, solid–liquid two-phase velocity, dynamic and static pressure, and pressure loss of the flow field in the conveying system. The flow field distribution is chaotic when the transverse oscillation period of the pipeline is small. This condition becomes highly evident when the oscillation amplitude is large. 



中文翻译:

海洋动态环境下天然气水合物管道水力输送流动规律

该工作基于计算流体动力学研究方法,模拟了海洋动态环境中运输管道的运动。目前的工作还研究了海洋动态环境对管道中固液两相流场的影响。在深海采矿成矿系统波动实验平台上,对天然气水合物管道水力输送流动规律进行了实验研究。结果表明,管道的横向摆动对流场干扰较大,轴向振动的影响较小。当横向振动幅度小于0.5 m时,输送管道内的流场分布特性与稳态工作条件一致。当振荡幅度大于2 m时,振动对输送系统中的固相分布,固液两相速度,动压和静压以及流场的压力损失有很大影响。当管道的横向振荡周期小时,流场分布混乱。当振荡幅度大时,这种情况变得非常明显。 

更新日期:2020-04-20
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