Numerical simulation of a centrifugal slurry pump handling solid-liquid mixture: Effect of solids on flow field and performance

2019 ◽  
Vol 30 (10) ◽  
pp. 2225-2239 ◽  
Author(s):  
Rahul Tarodiya ◽  
Bhupendra K. Gandhi
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Liquid Mixture ◽  
Mixture Effect ◽  
And Performance ◽  
Solid Liquid

The Numerical Simulation of the Flow Field in the Underground Hydrocyclone

2013 ◽  
Vol 655-657 ◽  
pp. 470-475
Author(s):  
Jing Chang Wang ◽  
Fu Lai Guo ◽  
Meng Hua Wu
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Field Distribution ◽  
Phase Distribution ◽  
Three Dimensional ◽  
Internal Flow ◽  
No Formation ◽  
The Media ◽  
Solid Liquid ◽  
Air Column

For preventing sand in underground oil, this paper structures a model of hydrocyclone with the inside cyclone and the outside one seriesing and describes how it works. By the TGrid procedures, the all of the hydrocyclone is meshed with the tetrahedral and the boundary conditions are determined. The methods of Three-dimensional numerical simulation in FLUENT are used to simulate the velocity field distribution, the pressure field distribution, the path lines of the separated medition characteristics of the separated medium and the phase distribution of the medium. The affect of the internal separated medition characteristics to the separated performance is analysed. Through the simulation, it is found that the spiral fin in the hydrocyclone can guide the fluid to produce a vortex flow to meet the purpose of separating the solid-liquid. There is no formation of the air column comparing with the conventional cyclone, so the internal flow field is more stable to conductive to the separation of the media. It provides a basis for the improvement of the cyclone.

A Numerical Simulation of Parachute Opening Process Based on ALE Method

2013 ◽  
Vol 390 ◽  
pp. 33-37
Author(s):  
Y. Zhang ◽  
H. Cheng ◽  
L. Yu
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Structure Change ◽  
Field Change ◽  
Finite Mass ◽  
Ale Method ◽  
And Performance ◽  
Opening Process

In this paper, the parachute opening process of finite mass situation was simulated based on ALE method. The results of structure change, the flow field change and some important aerodynamic data were obtained. Compared with the experiment, it can be found that the opening process was same with the actual opening. This method was useful in parachute designing and performance analyzing.

Prediction of Liquid Viscosity Effect on Flow Field and Performance in a Solid-Liquid Hydrocyclone

2011 ◽  
Vol 317-319 ◽  
pp. 401-404 ◽  
Author(s):  
Ding Feng ◽  
Si Huang ◽  
Li Luo ◽  
Wei Guo Ma
Keyword(s):  
Energy Consumption ◽  
Flow Field ◽  
Convenient Method ◽  
Field Research ◽  
Liquid Viscosity ◽  
Viscosity Effect ◽  
Viscosity Increase ◽  
Two Phases ◽  
And Performance ◽  
Solid Liquid

Many factors can have effect on flow field and performance, which makes the hydrocyclone design a complex work. Liquid’s viscosity is one of these factors, but it is costly and almost impossible to investigate how the liquid viscosity influences the performance of the hydrocyclone by test or experiment. At present, CFD technique provides us a convenient method for the flow field research in the hydrocyclone. This paper, intended to explore the effect of liquid’s viscosity on the flow field and hydrocyclone’s efficiency, presents a simulation to model the flow field in the hydrocyclone by changing the viscosity of the liquid. By comparing the results of the simulation, it is found that liquid with higher viscosity can reduce the velocity of the flow because of the friction between flow and wall and the friction between the two phases. Furthermore, viscosity increase of the liquid enlarges the area of shot flow and circulating flow, which make separating efficiency decrease and energy consumption rise.

The Numerical Simulation and Performance Analysis of the Vortex Pump for Solid-Liquid Two Phase Medium

2014 ◽  
Vol 527 ◽  
pp. 88-92
Author(s):  
Peng Yun Song ◽  
Hong Li Wang ◽  
Peng Cheng He
Keyword(s):  
Numerical Simulation ◽  
Volume Fraction ◽  
Internal Flow ◽  
Solid Particles ◽  
Two Phase ◽  
Pump Head ◽  
Phase Medium ◽  
And Performance ◽  
Solid Liquid ◽  
The Impact

The numerical simulation of a 3-D model of the internal flow field for a Vortex slurry pump has been analyzed in this paper. The impact of different solids volume fraction on the distribution of solid particle was analyzed. The expression of the pump head and efficiency was derived by the energy equation. The results show that either on the long blades or on the short blades, the content of the solid particles increases with the increasing of the volume fraction. The results by the expression of the pump head and efficiency are compared with the results of the simulations. The conclusions show that the expression results are similar with the numerical simulation results, and the main factors of affecting the inner and outer characteristics are the solid particles.

3D Numerical Simulation of Inner Water Flow Field in a Hydrocyclone with Air Column

2011 ◽  
Vol 71-78 ◽  
pp. 2107-2111
Author(s):  
Hui Li ◽  
Xiao Jun Guo
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Water Flow ◽  
Field Distribution ◽  
Three Dimensional ◽  
Experimental Result ◽  
Computational Fluid Dynamics Cfd ◽  
Solid Liquid ◽  
Solid Liquid Separation ◽  
Air Column

Based on the principle and method of computational fluid dynamics (CFD), using the software, FLUENT, the inner water flow field in a hydrocyclone with air column was simulated and the flow details were studied roundly. This article analyzed the three-dimensional velocity field distribution, pressure field distribution and testified the reliability of numerical simulation to a certain extent. The “mixture” model was used to simulate the air column the first time and contrasted with experimental result, the simulated effect was proved effective. The results of this paper provided a good base and reference for the further research of solid-liquid separation.

Three-dimensional flow field numerical simulation and performance analysis for a new type canned motor pump

2013 ◽  
Vol 227 (12) ◽  
pp. 2825-2833 ◽  
Author(s):  
Cui Jianzhong ◽  
Xie Fangwei ◽  
Liu Qingyun ◽  
Wang Cuntang ◽  
Zhang Xianjun ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Three Dimensional ◽  
Internal Flow ◽  
Outer Diameter ◽  
Small Flow ◽  
New Type ◽  
Fluent Software ◽  
And Performance ◽  
Canned Motor

A new type of canned motor pump with extensive application value is designed, researched, and developed in this article. In order to grasp the characteristic of the internal flow field of the pump, the internal flow field is simulated numerically by using FLUENT software with the standard k–ɛ turbulence model, SIMPLEC algorithm, and multiple reference frame model. The distribution of the pressure and velocity of the flow in the canned motor pump is analyzed in different working conditions. Moreover, the head and efficiency of the pump is predicted based on the simulation results, which show that the head and efficiency of the canned motor pump in small flow rate will be better. The performance of the canned motor pump can be improved by appropriately increasing the outer diameter of the impeller and the base diameter of the volute. The results of the numerical simulation are in accord with theoretical analysis, which verifies the correctness of the numerical simulation. The investigations have important theoretical guiding significance for the design of the canned motor pump.

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