输浆管道液—固两相流静电场特性研究  

Research of electrostatic field characteristics of liquid-solid two-phase flow inside slurry pipeline

作　　者：王湃[1] 汪梅[1] 马宪民[1] 

机构地区：[1]西安科技大学电气与控制工程学院,陕西西安710054

出　　处：《工矿自动化》2015年第8期76-81,共6页Journal Of Mine Automation

基　　金：国家自然科学基金项目(51405381);西安科技大学培育基金项目(201314)

摘　　要：利用有限元方法建立了输浆管道内液-固两相流(矿浆)的静电场模型,以检测灵敏度为媒介,对液-固两相流的软场特性进行深入研究,分析了矿浆的流速、固体颗粒大小、结垢、浓度对软场特性的影响,得出了如下结论:在矿浆流速越低、矿浆固体颗粒越大和结垢层越厚时,灵敏度分布越不均匀;矿浆浓度的变化越大,对灵敏度影响越大。这一结论为输浆管道液-固两相流的可视化检测提供了技术支撑。This paper adopted finite element method to set up an electrostatic field model of liquid-solid two phase flow inside slurry pipeline, and made qualitative research on soft field characteristics of liquid- solid two phase flow by taking sensitivity as a medium. It analyzed impact on the soft field characteristics from flow rate, size of solid particles, deposit and concentration and got the following conclusion： the slower the ore pulp flows, the more uneven the sensitivity distributes; the larger the solid ore pulp particle is, the more uneven the sensitivity distributes; the thicker the deposit scales, the more uneven the sensitivity distributes. The greater the concentration of ore pulp changes, the greater the impact occurs on lhe sensitivity. The conclusion provides technical support for the visualization test on the liquid-solid two- phase flow inside slurry pipeline.

关 键 词：输浆管道 液-固两相流 有限元法 电阻层析成像 软场特性 

分 类 号：TD67[矿业工程—矿山机电]