东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (2): 260-264.DOI: 10.12068/j.issn.1005-3026.2017.02.022

• 机械工程 • 上一篇    下一篇

基于结构化网格的两级矿浆泵数值模拟分析

杨放琼1,2， 周卓1， 徐海良1,2， 吴波1,2   

  1. (1. 中南大学 机电工程学院， 湖南 长沙410083; 2. 中南大学 高性能复杂制造国家重点实验室， 湖南 长沙410083)
  • 收稿日期:2015-10-16 修回日期:2015-10-16 出版日期:2017-02-15 发布日期:2017-03-03
  • 通讯作者: 杨放琼
  • 作者简介:杨放琼(1966-)，女，湖南长沙人，中南大学教授； 徐海良(1965-)，男，湖南湘乡人，中南大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51375498); 教育部博士学科点专项科研基金资助项目(20130162110004).

Numerical Simulation of Two-Stage Slurry Pump Based on Structural Mesh

YANG Fang-qiong1,2， ZHOU Zhuo1， XU Hai-liang1,2 ，WU Bo1,2   

  1. 1. School of Mechanical and Electrical Engineering， Central South University， Changsha 410083， China; 2.State Key Laboratory of High Performance Complex Manufacturing， Changsha 410083， China.
  • Received:2015-10-16 Revised:2015-10-16 Online:2017-02-15 Published:2017-03-03
  • Contact: ZHOU Zhuo
  • About author:-
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摘要： 为了研究深海采矿两级矿浆泵泵内固液流体流动规律及工作性能，采用计算流体动力学软件CFD对两级矿浆泵泵内的固液两相湍流进行了数值模拟和性能预测.阐述了矿浆泵计算流道区域的拓扑块划分方法和结构化网格生成方法;采用RNG κ-ε湍流模型和多参考坐标系，进行全三维流场数值模拟，分析了矿浆泵内流场的压力分布、流速分布和湍动能分布，进而计算出不同颗粒属性的泵的特性曲线.研究表明，颗粒属性对矿浆泵工作性能有重要影响，在颗粒体积分数相同的条件下，泵的扬程和效率均随颗粒粒径的减小而增大.颗粒的体积分数适宜控制在5%~10%左右.

关键词: 深海采矿, 两级矿浆泵, 结构化网格, 数值模拟, 计算流体动力学

Abstract: In order to investigate the solid-liquid fluid flowing law and work performance of two-stage slurry pump for deep-sea mining，numerical simulation and performance prediction to the two-stage slurry pump were conducted by using the computational fluid dynamics software. The methods of topological blocking and structural meshing in the domain of the slurry pump were described. A three-dimensional turbulent flow simulation was performed with a RNG κ-ε turbulence model and multiple reference frame to obtain pressure， velocity and kinetic energy distribution. Furthermore， the performance curve of the slurry pump with different particle properties was determined based on the simulation results. The research shows that the particle properties have an important influence on the working performance of slurry pump. With the same particle concentration， the head and efficiency of the pump are increased with the decrease of particle size. It is appropriate to control the particle concentration of 5%-10%.

Key words: deep-sea mining, two-stage slurry pump, structural mesh, numerical simulation, computational fluid dynamics

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