scholarly journals The research on particle trajectory of solid-liquid two-phase flow and erosion predicting in screw centrifugal pump

2016 ◽  
Vol 129 ◽  
pp. 012052 ◽  
Author(s):  
Z J Shen ◽  
R N Li ◽  
W Han ◽  
W G Zhao ◽  
X H Wang
Keyword(s):  
Centrifugal Pump ◽  
Particle Trajectory ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Solid Liquid

scholarly journals Study on the Effects of the Wear-Rings Clearance on the Solid-Liquid Two-Phase Flow Characteristics of Centrifugal Pumps

Symmetry ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2003
Author(s):  
Chaoshou Yan ◽  
Jianfei Liu ◽  
Shuihua Zheng ◽  
Bin Huang ◽  
Jiacheng Dai
Keyword(s):  
Numerical Simulation ◽  
Centrifugal Pump ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Centrifugal Pumps ◽  
Suction Surface ◽  
Two Phase ◽  
Wear Area ◽  
Fluid Medium ◽  
Solid Liquid

In order to study the wear law of the centrifugal pump flowing surface under different wear-rings clearance, the McLaury wear model was used to conduct the full-passage numerical simulation of solid-liquid two-phase flow in a single-stage single-suction centrifugal pump. The reliability of the numerical calculation method is verified by comparing the experimental data and numerical simulation results. The clearance is 0.1, 0.15, 0.2, 0.3 and 0.5 mm, respectively. The results show that the wear of the centrifugal pump blades is mainly concentrated in the end part and the inlet part of the blade, and the wear of the pressure surface at the end of the suction surface and the front of the blade is more serious. As the clearance increases, the maximum wear value in the impeller increases first and then decreases, reaching a maximum at 0.15 mm. With the increase of the clearance, the wear degree and the wear rate of the volute wall surface first increase and then decrease, and reach the maximum at 0.2 mm. With the increase of the clearance and the concentration of the fluid medium, the wear at the clearance of the centrifugal pump is more serious, and the severe wear area exhibits a point-like circumferential distribution.

scholarly journals Numerical Simulation of Fine Particle Solid-Liquid Two-Phase Flow in a Centrifugal Pump

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Yanping Wang ◽  
Bozhou Chen ◽  
Ye Zhou ◽  
Jianfeng Ma ◽  
Xinglin Zhang ◽  
...  
Keyword(s):  
Particle Size ◽  
Internal Pressure ◽  
Centrifugal Pump ◽  
Fine Particle ◽  
Volume Concentration ◽  
Two Phase Flow ◽  
Solid Particles ◽  
Phase Flow ◽  
Two Phase ◽  
Solid Liquid

To study the effect of fine particle size and volume concentration on the performance of solid-liquid two-phase centrifugal pump, the mixture multiphase flow model, RNG k-ε turbulence model, and SIMPLEC algorithm were used to simulate the two-phase flow of the centrifugal pump. The effects of particle size and volume concentration on internal pressure distribution, solid volume distribution, and external characteristics were analyzed. The results show that under the design discharge conditions, with the increase of particle size and volume concentration, the internal pressure of the flow field will decrease, and the volume fraction of solid phase in the impeller passage will also decrease as a whole. The solid particles gradually migrate from the suction surface to the pressure surface, and the particles in the volute channel are mainly concentrated in the flow channel near the outlet side of the volute. With the increase of particle size and volume concentration, the negative pressure value at the inlet of centrifugal pump increases, the total pressure difference at the inlet and outlet decreases, and the head and efficiency decrease accordingly.

Design and Experiment of a Small Flowrate Solid-liquid Two-phase Flow Centrifugal Pump

2013 ◽  
Vol 12 (23) ◽  
pp. 7621-7625 ◽  
Author(s):  
Xiao Jun-Jian ◽  
Zhang Yu-Liang ◽  
Zhao Yan-Juan
Keyword(s):  
Centrifugal Pump ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Solid Liquid

Numerical simulation and analysis of solid-liquid two-phase flow in centrifugal pump

2013 ◽  
Vol 26 (1) ◽  
pp. 53-60 ◽  
Author(s):  
Yuliang Zhang ◽  
Yi Li ◽  
Baoling Cui ◽  
Zuchao Zhu ◽  
Huashu Dou
Keyword(s):  
Numerical Simulation ◽  
Centrifugal Pump ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Solid Liquid

Combined experimental and computational investigation of the effect of coating on operation characteristics of solid–liquid two-phase flow centrifugal pump

2020 ◽  
pp. 2150062
Author(s):  
Yong Wang ◽  
Jie Chen ◽  
Lei Xie ◽  
Hou-Lin Liu ◽  
Kai-Kai Luo
Keyword(s):  
Centrifugal Pump ◽  
Coating Thickness ◽  
Pressure Fluctuation ◽  
Two Phase Flow ◽  
Internal Flow ◽  
Radial Force ◽  
Phase Flow ◽  
Two Phase ◽  
Solid Liquid ◽  
Operation Characteristics

The objective of this paper is to apply combined experimental and computational modeling to investigate the influence of different coating thickness on the operation characteristics of solid–liquid two-phase flow centrifugal pump. According to the characteristics of sediment flow in the Yellow River Basin, the effects of polyurethane coating thickness on the energy performance and pressure fluctuation are analyzed under the condition of solid–liquid two-phase flow and clean water. Meanwhile, the internal flow characteristics and radial force of the coated pump under the condition of solid–liquid two-phase flow are studied. The results show that the blade inlet and outlet of impeller are easy to wear, and the pressure fluctuation at the outlet of the model pump can be reduced by spraying proper coating thickness. The model pump with coating increases the low-speed zone of internal flow, which is mainly due to the increase of the viscous bottom layer area. The variation amplitude of radial force in sediment-laden water decreases with the increase of coating thickness.

scholarly journals Study on solid–liquid two-phase flow characteristics of centrifugal pump impeller with non-smooth surface

2019 ◽  
Vol 11 (5) ◽  
pp. 168781401984826 ◽  
Author(s):  
Yunqing Gu ◽  
Nuojia Liu ◽  
Jiegang Mou ◽  
Peijian Zhou ◽  
Heng Qian ◽  
...  
Keyword(s):  
Centrifugal Pump ◽  
Smooth Surface ◽  
Two Phase Flow ◽  
Flow Characteristics ◽  
Phase Flow ◽  
Two Phase ◽  
Pump Impeller ◽  
Solid Liquid ◽  
Centrifugal Pump Impeller
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