基于结构化网格的两级矿浆泵数值模拟分析

发布时间：2018-02-24 02:29

  本文关键词： 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　出处：《东北大学学报(自然科学版)》2017年02期 　论文类型：期刊论文

【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RNGκ-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.
[Abstract]:In order to study the solid-liquid flow law and working performance of two-stage slurry pump in deep-sea mining, The numerical simulation and performance prediction of solid-liquid two-phase turbulence in two-stage slurry pump are carried out by using the computational fluid dynamics software CFD. The topological block partition method and structured grid generation method for calculating channel area of slurry pump are described. Using RNG 魏-蔚 turbulence model and multi-reference coordinate system, the full-3D flow field numerical simulation is carried out. The pressure distribution, velocity distribution and turbulent kinetic energy distribution in slurry pump are analyzed, and the characteristic curves of pump with different particle properties are calculated. Particle properties have an important effect on the working performance of slurry pump. Under the same particle volume fraction, the lift and efficiency of the pump increase with the decrease of particle size, and the particle volume fraction is suitable to be controlled at 5% or 10%.
【作者单位】： 中南大学机电工程学院;中南大学高性能复杂制造国家重点实验室;
【基金】：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)
【分类号】：TD424
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本文编号：1528532