Coarse Particle Motion Characteristics in a Double-Stage Slurry Pump Considering Leakage Flow

Along with the pressing demand for the long-distance transportation of coarse particles in the deep-sea mining industry, evaluating the slurry pump’s passing through and erosive wear by studying the particle motion characteristics and the slurry behavior is becoming increasingly important. Research...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Hao Jia, Yuqi Wang, Zuchao Zhu, Xianghui Su, Zhenji Tang
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/ad25526cf4b04ae4bcdb7e2b9d9d21ea
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:ad25526cf4b04ae4bcdb7e2b9d9d21ea
record_format	dspace
spelling	oai:doaj.org-article:ad25526cf4b04ae4bcdb7e2b9d9d21ea2021-11-08T02:35:35ZCoarse Particle Motion Characteristics in a Double-Stage Slurry Pump Considering Leakage Flow1875-920310.1155/2021/5904446https://doaj.org/article/ad25526cf4b04ae4bcdb7e2b9d9d21ea2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/5904446https://doaj.org/toc/1875-9203Along with the pressing demand for the long-distance transportation of coarse particles in the deep-sea mining industry, evaluating the slurry pump’s passing through and erosive wear by studying the particle motion characteristics and the slurry behavior is becoming increasingly important. Research on the influence of leakage flow through the clearance and balancing devices on the motion characteristic of granular grain flow is of great significance but has been seldom studied. This study coupled the discrete element method with the CFD method to investigate the comprehensive effect of a double-stage slurry pump’s main flow and leakage flow on the motion characteristics of particles with a 10 mm diameter. Results show that the leakage flow occupation in main flow falls from 26%–27% to 8%–9% for the two stages, with the flow rate increasing from 80 m3/h to 200 m3/h. In the first stage with leakage, accumulation of coarse particles was observed at the impeller eye, which should be paid much attention to slurry pumps’ operation to eliminate the chance of blockage. In the nonleak situation, although the increment of the average kinetic energy of particles through the impeller is more significant than in the leak case, most of them dissipate primarily by more than 10% collision in the bowl diffuser. In the leak or nonleak case, the average kinetic energy of particles was more than twice through the first stage but only 1.1 times through the second stage. The selection of stages in the slurry pump design should consider the limitation of particle velocity improvement.Hao JiaYuqi WangZuchao ZhuXianghui SuZhenji TangHindawi LimitedarticlePhysicsQC1-999ENShock and Vibration, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Hao Jia Yuqi Wang Zuchao Zhu Xianghui Su Zhenji Tang Coarse Particle Motion Characteristics in a Double-Stage Slurry Pump Considering Leakage Flow
description	Along with the pressing demand for the long-distance transportation of coarse particles in the deep-sea mining industry, evaluating the slurry pump’s passing through and erosive wear by studying the particle motion characteristics and the slurry behavior is becoming increasingly important. Research on the influence of leakage flow through the clearance and balancing devices on the motion characteristic of granular grain flow is of great significance but has been seldom studied. This study coupled the discrete element method with the CFD method to investigate the comprehensive effect of a double-stage slurry pump’s main flow and leakage flow on the motion characteristics of particles with a 10 mm diameter. Results show that the leakage flow occupation in main flow falls from 26%–27% to 8%–9% for the two stages, with the flow rate increasing from 80 m3/h to 200 m3/h. In the first stage with leakage, accumulation of coarse particles was observed at the impeller eye, which should be paid much attention to slurry pumps’ operation to eliminate the chance of blockage. In the nonleak situation, although the increment of the average kinetic energy of particles through the impeller is more significant than in the leak case, most of them dissipate primarily by more than 10% collision in the bowl diffuser. In the leak or nonleak case, the average kinetic energy of particles was more than twice through the first stage but only 1.1 times through the second stage. The selection of stages in the slurry pump design should consider the limitation of particle velocity improvement.
format	article
author	Hao Jia Yuqi Wang Zuchao Zhu Xianghui Su Zhenji Tang
author_facet	Hao Jia Yuqi Wang Zuchao Zhu Xianghui Su Zhenji Tang
author_sort	Hao Jia
title	Coarse Particle Motion Characteristics in a Double-Stage Slurry Pump Considering Leakage Flow
title_short	Coarse Particle Motion Characteristics in a Double-Stage Slurry Pump Considering Leakage Flow
title_full	Coarse Particle Motion Characteristics in a Double-Stage Slurry Pump Considering Leakage Flow
title_fullStr	Coarse Particle Motion Characteristics in a Double-Stage Slurry Pump Considering Leakage Flow
title_full_unstemmed	Coarse Particle Motion Characteristics in a Double-Stage Slurry Pump Considering Leakage Flow
title_sort	coarse particle motion characteristics in a double-stage slurry pump considering leakage flow
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/ad25526cf4b04ae4bcdb7e2b9d9d21ea
work_keys_str_mv	AT haojia coarseparticlemotioncharacteristicsinadoublestageslurrypumpconsideringleakageflow AT yuqiwang coarseparticlemotioncharacteristicsinadoublestageslurrypumpconsideringleakageflow AT zuchaozhu coarseparticlemotioncharacteristicsinadoublestageslurrypumpconsideringleakageflow AT xianghuisu coarseparticlemotioncharacteristicsinadoublestageslurrypumpconsideringleakageflow AT zhenjitang coarseparticlemotioncharacteristicsinadoublestageslurrypumpconsideringleakageflow
_version_	1718443218233720832

Coarse Particle Motion Characteristics in a Double-Stage Slurry Pump Considering Leakage Flow

Ejemplares similares