Numerical simulation of particle flow trajectory in slurry pump for deep-sea mining

被引：0

作者：

Xu H. ^{[1
]}

Zeng Y. ^{[1
]}

Chen Q. ^{[1
]}

Wu B. ^{[1
]}

机构：

[1] State Key Laboratory of High-performance Complex Manufacturing, Central South University, Changsha

来源：

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2017年 / 48卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Deep-sea mining; Discrete phase model; Numerical calculation; Slurry pump; Vaned diffuser;

D O I：

10.11817/j.issn.1672-7207.2017.01.012

中图分类号：

学科分类号：

摘要：

As slurry pump for deep-sea mining transportation system is easy to be weared, the fluid field of the slurry pump was solved by the RNG κ-ε turbulence model, and it was compared with the experimental results to check the calculation accuracy. Based on the results of the flow field, the particle flow trajectories were achieved by using discrete-phase model. The effects of pump speed, flow rate and particle diameter on the erosion characteristics of slurry pump were researched. The results show that with the increase of pump speed, probability of particle impacting on flow passage components wall increases. The impact velocity increases, which aggravates the abrasion of flow passage components. With the increase of flow rate, the location of particle impacting the blade surface gradually moves towards the inlet head of the blade, and the impact angle also increases, and the particle flow angle of the impeller increases. The particle is apt to impact on the inlet head of guide vane and flows more disorderly. The little particle never impacts on the impeller. But the velocity of particle impacting on the vaned diffuser is larger, and the erosion of the vaned diffuser is more serious than the impeller. The erosion of the large particle impacting on the impeller and vaned diffuser is little different, which is more accordant to the equivalent life design principles. © 2017, Central South University Press. All right reserved.

引用

页码：84 / 90

页数：6

共 17 条

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