垂直管道内粗颗粒运动特性数值模拟  

Numerical Simulation of Trajectory of Coarse Particle Motion in Vertical Pipeline

作　　者：关英杰 郑皓[1] 宿向辉 唐达生[1] GUAN Ying-jie;ZHENG Hao;SU Xiang-hui;TANG Da-sheng(State Key Laboratory of Deep Sea Mineral Resources Development and Utilization Technology,Changsha ResearchInstitute of Mining and Metallurgy Co Ltd,Changsha 410012,Hunan,China;National and Local Joint EngineeringLaboratory of Fluid Transportation Technology,Zhejiang Sci-Tech University,Hangzhou 310018,Zhejiang,China)

机构地区：[1]长沙矿冶研究院有限责任公司深海矿产资源开发利用技术国家重点实验室,湖南长沙410006 [2]浙江理工大学流体传输技术国家地方联合实验室,浙江杭州310018

出　　处：《矿冶工程》2019年第2期10-14,共5页Mining and Metallurgical Engineering

基　　金：国家重点研发计划(2016YFC0304103);国家自然科学基金(51339008);博士后科学基金面上项目(2017M622561);湖南省青年自然科学基金(2019JJ50633)

摘　　要：为研究深海采矿管道提升系统中颗粒的运动规律,采用数值模拟的方法对不同粒径、不同入射位置的单个颗粒及单一粒径和混合粒径颗粒群的运动规律进行了研究。结果表明,颗粒输送速度随着颗粒粒径增大而减小;从管道中心到壁面,颗粒速度逐渐减小;颗粒群输送颗粒存在一定程度的碰撞,输送的能量损失更大。得到了垂直管道内颗粒的运动规律,对颗粒输送速度、碰撞、能量损失等进行了量化分析。对未来深海采矿水下输送系统设计有一定参考意义。For obtaining the law of motion of coarse particles in the pipeline lifting system for deep sea mining,the motion trajectory of individual particle with different grain sizes and different entering positions,as well as of particle group composed of particles with single grain size and mixed grain sizes were studied by using numerical simulation method. The results showed that the conveying velocity for particles decreased with the increasing of grain size,and gradually decreased from the center of the pipe toward the wall. Collision among particles could be occurred during the transport of particle group,resulting in greater energy losses for transport. The law of particle motion in the vertical pipeline was finally obtained,and then particle transport velocity,particle collision as well as energy loss were analyzed quantitatively. The study result is of certain reference significance for the design of underwater transportation system for the future deep-sea mining.

关 键 词：垂直提升 管道输送 固液两相流 深海采矿 粗颗粒 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]