叶片式渣浆泵叶轮中浆体浓度分布数值模拟

离心式渣浆泵叶轮中固液两相流动，对于不同颗粒粒径有不同的运动规律和渣浆浓度分布。采用FLUENT软件，并以颗粒碰撞理论为基础的颗粒动力学双流体模型，来对颗粒渣浆泵叶轮内部流动进行数值模拟，揭示其固体相的颗粒分布和运动规律，就能够比较精确地了解叶轮磨损的主要区域和磨损规律，这样有助于改善离心式渣浆泵叶轮的水力设计，减少磨损，提高使用寿命。对颗粒直径分别为0．5，1，2min时颗粒浓度分布进行了数值模拟，对颗粒相体积分布图的分析表明，模拟结果与实验结论基本相同。

Numerical simulation of the slurry consistence through the impeller of the slurry pump

The flow structure and the slurry consistence of the particle-liquid two-phase flows through the impeller of the centrifugal slurry pump are studied. By using FLUENT code and the kinetic theory of granular flow, the three-dimensional turbulent particle-liquid two-phase flow through the impeller has been simulated. The calculated results give the distribution of the particle and the flow structure, and help to understand the main region of the abrasion of the impeller and to improve the hydraulic design of the impeller for decreasing the abrasion and increasing the useful life of the pump. Numerical simulations on granule concentration distribution concerning granule diameter of 0.5 mm, 1 mm and 2 mm are carried out. From the analysis of the phase volume distribution map of granule, it is shown that the simulated resuits agree well with the experiments.