CFD simulation of the mixing and dispersing of floating particles in a viscous system

Liu, Baoqing; Zheng, Yijun; Chen, Mingqiang; Chen, Xiaoge; Jin, Zhi-jiang

doi:10.1590/0104-6632.20170344s20160379

Cited by 7 publications

(4 citation statements)

References 23 publications

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“…In addition, the new pump design adapts and improves the performance characteristics based on different application conditions. The characteristics include energy efficiency, reliability, particle passability and the protection of special media [31][32][33][34][35]. Presently, new pump designs are still explored and optimized, such as the design of similar blades, composite blades, composite disc, etc, as shown in Figure 3.…”

Section: New-generation Disc Pumpmentioning

confidence: 99%

Research on Energy-Efficient Disc Pumps: A Review on Physical Models and Energy Efficiency

Pei,

Liu,

Ooi

2023

Machines

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Disc pumps have obvious advantages in dealing with difficult-to-pump media. Energy efficiency and sustainable energy management are important topics with regard to reducing costs and promoting carbon neutrality. Though the concept of the disc pump was proposed in the 1850s, development was slow and limited by its initial model. However, with the development of industries such as petrochemicals and food, the efficient pumping of difficult-to-pump media is much needed, but facing challenges. Therefore, research on energy-efficient disc pumps is particularly important moving forward. In this paper, the available information from the open literature about the research and development of the disc pump will be thoroughly reviewed. It focuses on the historical development, energy efficiency and physical model application of the disc pump. The review ends with a proposal for the direction of future development, and in this aspect, it is proposed that the energy efficiency prediction model based on velocity slip theory, the energy management system based on multi-scenarios and the design method based on energy conversion theory are important. The latest achievements in energy conversion are given. This review also provides a new perspective for the development of energy-efficient disc pumps.

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Section: New-generation Disc Pumpmentioning

confidence: 99%

Research on Energy-Efficient Disc Pumps: A Review on Physical Models and Energy Efficiency

Pei,

Liu,

Ooi

2023

Machines

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“…The Euler-Euler approach is adopted to simulate the stirring process, and the Realizable k − 1 model with a strong ability to correct the rotating flow is used to calculate the turbulence flow. The solid-liquid phase mass and momentum balance equations are expressed as follows [20]:…”

Section: Mathematical Modelsmentioning

confidence: 99%

“…The Euler–Euler approach is adopted to simulate the stirring process, and the Realizable model with a strong ability to correct the rotating flow is used to calculate the turbulence flow. The solid–liquid phase mass and momentum balance equations are expressed as follows [20]: where, , , , , , , and are the density, volume fraction, velocity vector, pressure, gravitational acceleration, tensor of shear stress, bulk viscosity, and inter-phase force of liquid phase and solid phase , respectively. is the effective viscosity, for the liquid phase, , for the solid phase, .…”

Section: Model Buildingmentioning

confidence: 99%

Effect of impellers on particle mixing behaviour in KR desulphurization process

Jiang

et al. 2021

Ironmaking & Steelmaking

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Three types of impellers are developed to improve reagent efficiency in the desulfurization process of hot metal by kanbara reactor stirring method. The movement and dispersion behavior of particles are investigated using the CFD technology. The flow structure, particle volume fraction distribution and mixing time are taken as the characteristics to describe the entrainment ability and mixing ability of the impellers. The results show that the square center impeller (impeller B) improves the flow structure of the molten iron, and makes the volume fraction distribution of the particles much better than that of the traditional impeller (impeller A), the mixing time is the shortest among the three impellers under the same operating parameters. The blades with downward angle (impeller C and impeller D) improve the mixing effect of the region below the impeller, and the impeller C is more sensitive to the change of rotation speed.

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“…A study was conducted on a slurry pot tester to find the flow field characteristic on the model, in which a stirrer was used with the six-blade 45° pitched turbine blade 3) . The erosion wear in the material can be reduced by creating a hard-coated surface on the guide vane surface which is in direct contact with the sand and water mixture at the inlet section of the turbine.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analysis of Slurry Pot Testerby Response Surface Methodology (RSM) and Computational Fluid Dynamics (CFD)

Singh¹,

Yadav²,

Trivedi³

2023

Evergreen

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Erosion wear is a big problem in hydraulic reaction turbines and centrifugal pumps. It not only reduces the life of the turbine but also reduces the performance and power output since it removes the material from the guide vane due to that water will not reach the impeller blade at the designed blade angle. In this research paper, a slurry pot tester has been designed and manufactured in the lab to analyze the suspension of sand particles in water at a varying concentration of sand, particle size, and terminal velocity by the Response Surface Methodology (RSM) and Computational Fluid Dynamics (CFD). The RSM determines the suspension speed of sand particles based on experimental data. The CFD simulation was conducted to study the internal flow field of the sand water mixture in the slurry pot tester. For experimentation, the particle size varies from 200 μm, 325 μm, and 450 μm, sand concentration varies from 1%, 3.5%, and 6%, and terminal velocity from 0.06046 m/s, 0.08768 m/s and 0.1149 m/s. Finally, surface plots, contour plots, and factorial plots are drawn in the RSM to find the outcomes of input variables on the suspension speed. The residual plot, Analysis of Variance (ANOVA), and Pareto chart show the accuracy of the predicted results of RSM. The regression equations generated by ANOVA give good accuracy with S, R2, and R2(adj) values 0.538384, 99.99%, and 99.98%, respectively. The CFD simulation results give a good inner picture of the slurry pot tester by plotting the graph of phase distribution, path line, and velocity field.

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CFD simulation of the mixing and dispersing of floating particles in a viscous system

Cited by 7 publications

References 23 publications

Research on Energy-Efficient Disc Pumps: A Review on Physical Models and Energy Efficiency

Research on Energy-Efficient Disc Pumps: A Review on Physical Models and Energy Efficiency

Effect of impellers on particle mixing behaviour in KR desulphurization process

Experimental and Numerical Analysis of Slurry Pot Testerby Response Surface Methodology (RSM) and Computational Fluid Dynamics (CFD)

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