1
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Ortega-Roano E, Souzy M, Weinhart T, van der Meer D, Marin A. Clogging of noncohesive suspensions through constrictions using an efficient discrete particle solver with unresolved fluid flow. Phys Rev E 2023; 108:064905. [PMID: 38243512 DOI: 10.1103/physreve.108.064905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 11/04/2023] [Indexed: 01/21/2024]
Abstract
When objects are forced to flow through constrictions their transport can be frustrated temporarily or permanently due to the formation of arches in the region of the bottleneck. While such systems have been intensively studied in the case of solid particles in a gas phase being forced by gravitational forces, the case of solid particles suspended in a liquid phase, forced by the liquid itself, has received much less attention. In this case, the influence of the liquid flow on the transport efficiency is not well understood yet, leading to several apparently trivial but yet unanswered questions, e.g., would an increase of the liquid flow improve the transport of particles or worsen it? Although some experimental data are already available, they lack enough detail to give a complete answer to such a question. Numerical models would be needed to scrutinize the system deeper. In this paper, we study this system making use of an advanced discrete particle solver (mercurydpm) and an approximated numerical model for the liquid drag and compare the results with experimental data.
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Affiliation(s)
- Edgar Ortega-Roano
- Department of Physics of Fluids, University of Twente, 7522NB, Enschede, The Netherlands
| | - Mathieu Souzy
- INRAE, Aix-Marseille Université, UMR RECOVER, 13182 Aix-en-Provence, France
| | - Thomas Weinhart
- Multi Scale Mechanics, Department of Thermal and Fluid Engineering, University of Twente, 7522NB, Enschede, The Netherlands
| | - Devaraj van der Meer
- Department of Physics of Fluids, University of Twente, 7522NB, Enschede, The Netherlands
| | - Alvaro Marin
- Department of Physics of Fluids, University of Twente, 7522NB, Enschede, The Netherlands
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2
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Ramírez J, de Munck M, Liu Z, Rieder DR, Baltussen M, Buist K, Kuipers JAM. CFD-DEM Evaluation of the Clustering Behavior in a Riser-the Effect of the Drag Force Model. Ind Eng Chem Res 2023; 62:18960-18972. [PMID: 38020786 PMCID: PMC10655080 DOI: 10.1021/acs.iecr.3c00853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/08/2023] [Accepted: 05/10/2023] [Indexed: 12/01/2023]
Abstract
Riser reactors are frequently applied in catalytic processes involving rapid catalyst deactivation. Typically heterogeneous flow structures prevail because of the clustering of particles, which impacts the quality of the gas-solid contact. This phenomenon results as a competition between fluid-particle interaction (i.e., drag) and particle-particle interaction (i.e., collisions). In this study, five drag force correlations were used in a combined computational fluid dynamics-discrete element method Immersed Boundary Model to predict the clustering. The simulation results were compared with experimental data obtained from a pseudo-2D riser in the fast fluidization regime. The clusters were detected on the basis of a core-wake approach using constant thresholds. Although good predictions for the global (solids volume fraction and mass flux) variables and cluster (spatial distribution, size, and number of clusters) variables were obtained with two of the approaches in most of the simulations, all the correlations show significant deviations in the onset of a pneumatic transport regime. However, the correlations of Felice (Int. J. Multiphase Flow1994, 20, 153-159) and Tang et al. [AIChE J.2015, 61 ( (2), ), 688-698] show the closest correspondence for the time-averaged quantities and the clustering behavior in the fast fluidization regime.
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Affiliation(s)
- Juan Ramírez
- Multiphase Reactors Group,
Department of Chemical Engineering & Chemistry, Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands
| | - Martijn de Munck
- Multiphase Reactors Group,
Department of Chemical Engineering & Chemistry, Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands
| | - Zhitao Liu
- Multiphase Reactors Group,
Department of Chemical Engineering & Chemistry, Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands
| | - David Raphael Rieder
- Multiphase Reactors Group,
Department of Chemical Engineering & Chemistry, Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands
| | - Maike Baltussen
- Multiphase Reactors Group,
Department of Chemical Engineering & Chemistry, Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands
| | - Kay Buist
- Multiphase Reactors Group,
Department of Chemical Engineering & Chemistry, Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands
| | - Johannes A. M.
Hans Kuipers
- Multiphase Reactors Group,
Department of Chemical Engineering & Chemistry, Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands
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3
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Yang H, Ma X. Research on the screening mechanisms of composite vibrating screens based on discrete elements. PLoS One 2023; 18:e0293205. [PMID: 37856556 PMCID: PMC10586613 DOI: 10.1371/journal.pone.0293205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 10/07/2023] [Indexed: 10/21/2023] Open
Abstract
To strengthen the screening efficiency of traditional vibrating screens, a new type of vibrating screen, namely the composite vibrating screen, has been proposed based on the Lissajous vibration synthesis theory. The working principles of composite vibrating screens have been explained. Numerical simulations of the sieving processes for such composite vibrating screens were carried out using the discrete element method. Compared with traditional linear vibrating screens, the force, stratification mechanisms, and throwing principles of the material on the screen's surface were studied, and the vibrating screens' material transportation and screening efficiency were analyzed. The results showed that with the existence of xyz three directions sub-vibrations of the composite vibrating screens, the material particle group is more diversified by the forces, the particle system is loose, the stratification effects are adequate, and the material is evenly distributed on the screen surfaces. Under the same vibration parameters, the composite vibrating screens' screening efficiencies and material transportation capacities were better than those of linear vibrating screens. This work provides a necessary reference for the development and application of new composite vibrating screens.
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Affiliation(s)
- Huarui Yang
- School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Anshan, Liaoning, China
| | - Xuedong Ma
- School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Anshan, Liaoning, China
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4
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Porcu R, Musser J, Almgren AS, Bell JB, Fullmer WD, Rangarajan D. MFIX-Exa: CFD-DEM simulations of thermodynamics and chemical reactions in multiphase flows. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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5
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Song S, Le-Clech P, Shen Y. Microscale fluid and particle dynamics in filtration processes in water treatment: A review. WATER RESEARCH 2023; 233:119746. [PMID: 36809713 DOI: 10.1016/j.watres.2023.119746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 12/13/2022] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
The complex filtration processes in water treatment, granular filtration and membrane filtration, often suffer from filter fouling, and the fundamental understanding of microscale fluid and particle dynamics is a key to improving filtration efficiency and stability. In this review, we identify and review several key topics in filtration processes: drag force, fluid velocity profile, intrinsic permeability and hydraulic tortuosity in microscale fluid dynamics, and particle straining, absorption, and accumulation in microscale particle dynamics. The paper also reviews several key experimental and computational techniques for investigating filtration processes at microscale considering their applicability and capability. Then, major findings in previous studies on these key topics are comprehensively reviewed in terms of microscale fluid and particle dynamics. Last, future research is discussed in terms of techniques, scopes and links. The review provides a comprehensive overview of microscale fluid and particle dynamics in filtration processes for water treatment and particle technology communities.
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Affiliation(s)
- Shuang Song
- School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Pierre Le-Clech
- School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Yansong Shen
- School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
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6
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Ma X, Wang D, Liu B, Dong H, Zhao L. Numerical simulations and validation of gas–solid flows in a fluidized‐bed roaster based on the
CFD‐DPM
model. CAN J CHEM ENG 2023. [DOI: 10.1002/cjce.24904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Affiliation(s)
- Xue‐Yi Ma
- School of Mechanical Engineering Shenyang University of Technology Shenyang 110870 China
| | - De‐Xi Wang
- School of Mechanical Engineering Shenyang University of Technology Shenyang 110870 China
| | - Bo Liu
- School of Chemical Equipment Shenyang University of Technology Liaoyang 111003 China
| | - Hui Dong
- School of Metallurgy Northeastern University Shenyang 110819 China
| | - Liang Zhao
- School of Metallurgy Northeastern University Shenyang 110819 China
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7
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Zhao Z, Zhou L, Bai L, Lv W, Agarwal RK. Effects of Particle Diameter and Inlet Flow Rate on Gas-Solid Flow Patterns of Fluidized Bed. ACS OMEGA 2023; 8:7151-7162. [PMID: 36844538 PMCID: PMC9948556 DOI: 10.1021/acsomega.3c00118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
The complex multiscale characteristics of particle flow are notoriously difficult to predict. In this study, the evolution process of bubbles and the variation of bed height were investigated by conducting high-speed photographic experiments to verify the reliability of numerical simulations. The gas-solid flow characteristics of bubbling fluidized beds with different particle diameters and inlet flow rates were systematically investigated by coupling computational fluid dynamics (CFD) and discrete element method (DEM). The results show that the fluidization in the fluidized bed will change from bubbling fluidization to turbulent fluidization and finally to slugging fluidization, and the conversion process is related to the particle diameter and inlet flow rate. The characteristic peak is positively correlated with the inlet flow rate, but the frequency corresponding to the characteristic peak is constant. The time required for the Lacey mixing index (LMI) to reach 0.75 decreases with increasing inlet flow rate; at the same diameter, the inlet flow rate is positively correlated with the peak of the average transient velocity; and as the diameter increases, the distribution of the average transient velocity curve changes from "M" to linear. The results of the study can provide theoretical guidance for particle flow characteristics in biomass fluidized beds.
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Affiliation(s)
- Zhenjiang Zhao
- Research
Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China
| | - Ling Zhou
- Research
Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China
| | - Ling Bai
- Research
Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China
| | - Wanning Lv
- Research
Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China
| | - Ramesh K Agarwal
- Department
of Mechanical Engineering and Materials Science, Washington University in St. Louis, St. Louis, Missouri 63130, United States
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8
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Grohn P, Heinrich S, Antonyuk S. Numerical Investigation of the Particle Dynamics in a Rotorgranulator Depending on the Properties of the Coating Liquid. Pharmaceutics 2023; 15:469. [PMID: 36839791 PMCID: PMC9963257 DOI: 10.3390/pharmaceutics15020469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/20/2023] [Accepted: 01/27/2023] [Indexed: 02/04/2023] Open
Abstract
In the pharmaceutical industry, the coating of particles is a widely used technique to obtain desired surface modifications of the final product, e.g., controlled release of the active agents. The production of round, coated particles is particularly important, which is why fluidized bed rotor granulators (FBRG) are often used for this process. In this work, Computational Fluid Dynamics (CFD) coupled with the Discrete Element Method (DEM) is used to investigate the wet particle dynamics, depending on the properties of the coating liquid in a FBRG. The DEM contact model was extended by liquid bridge model to account for capillary and viscous forces during wet contact of particles. The influence of the relative contact velocity on the maximum length of the liquid bridge is also considered in the model. Five different cases were compared, in which the particles were initially wetted, and the liquid loading as well as the surface tension and viscosity of the liquid were changed. The results show that increasing viscosity leads to a denser particle bed and a significant decrease in particle rotational velocities and particle motion in the poloidal plane of the FBRG. Reducing the liquid loading and surface tension results in increased particle movement.
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Affiliation(s)
- Philipp Grohn
- Institute of Particle Process Engineering, University of Kaiserslautern-Landau, Gottlieb-Daimler-Straße 44, 67663 Kaiserslautern, Germany
| | - Stefan Heinrich
- Institute of Solids Process Engineering and Particle Technology, Hamburg University of Technology, Denickestraße 15, 21073 Hamburg, Germany
| | - Sergiy Antonyuk
- Institute of Particle Process Engineering, University of Kaiserslautern-Landau, Gottlieb-Daimler-Straße 44, 67663 Kaiserslautern, Germany
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9
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Munck M, Gelder J, Peters E, Kuipers J. A detailed gas-solid fluidized bed comparison study on CFD-DEM coarse-graining techniques. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2022.118441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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10
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CFD-DEM study of reactive gas-solid flows with cohesive particles in a high temperature polymerization fluidized bed. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2022.118437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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11
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Soni RK, Chinthapudi E, Tripathy SK, Bose M, Goswami PS. Review on the chemical reduction modelling of hematite iron ore to magnetite in fluidized bed reactor. REV CHEM ENG 2022. [DOI: 10.1515/revce-2022-0021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Abstract
Steel production is considered as one of the major backbones of many economies. Though blast furnace is the primary route of steel production, the industries are willing to alternatives technologies such as the high temperature-controlled conversion of hematite to magnetite. The geological and mineralogical characteristics of the low-grade iron ores possess difficulties in their conventional enrichment. The literature concludes the advantages of high-temperature conversion in terms of easiness in downstream operations caused by decreased hardness and increased magnetic susceptibility of magnetite. The modelling work has been primarily focused on the direct reduction of iron ore to metallic iron. The present compilation discusses the scientific and engineering developments on the reduction-roasting of iron-ore followed by the CFD–DEM modelling and simulation work performed to reduce iron ore to magnetite. It provides a comprehensive review of the experimental and industrial progress done in the area.
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Affiliation(s)
- Rahul K. Soni
- CSIR-Institute of Minerals & Materials Technology , Bhubaneswar , India
| | | | | | - Manaswita Bose
- Department of Chemical Engineering , Indian Institute of Technology Bombay , Mumbai , India
| | - Partha S. Goswami
- Department of Chemical Engineering , Indian Institute of Technology Bombay , Mumbai , India
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12
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13
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Experimental validation of multiphase particle-in-cell simulations of fluidization in a bubbling fluidized bed combustor. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.118204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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14
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Grohn P, Schaedler L, Atxutegi A, Heinrich S, Antonyuk S. CFD‐DEM Simulation of Superquadric Cylindrical Particles in a Spouted Bed and a Rotor Granulator. CHEM-ING-TECH 2022. [DOI: 10.1002/cite.202200121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Philipp Grohn
- Technische Universität Kaiserslautern Institute of Particle Process Engineering Gottlieb-Daimler-Straße 44 67663 Kaiserslautern Germany
| | - Luca Schaedler
- Technische Universität Kaiserslautern Institute of Particle Process Engineering Gottlieb-Daimler-Straße 44 67663 Kaiserslautern Germany
| | - Aitor Atxutegi
- Hamburg University of Technology Institute of Solids Process Engineering and Particle Technology Denickestraße 15 (K) 21073 Hamburg Germany
| | - Stefan Heinrich
- Hamburg University of Technology Institute of Solids Process Engineering and Particle Technology Denickestraße 15 (K) 21073 Hamburg Germany
| | - Sergiy Antonyuk
- Technische Universität Kaiserslautern Institute of Particle Process Engineering Gottlieb-Daimler-Straße 44 67663 Kaiserslautern Germany
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15
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Xue-yi MA, Liang Z, De-xi W, Hui D, Bo L, Jiu-lei Z, Ze G. Numerical Analysis of the Gas−Solid Heat Transfer Characteristics of a Lightly calcined MgO Fluidized-bed Roaster. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.118334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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Nardo AD, Calchetti G, Carlo AD, Stendardo S. Sorption enhanced steam methane reforming in a bubbling fluidized bed reactor: simulation and analysis by the CPFD method. Comput Chem Eng 2022. [DOI: 10.1016/j.compchemeng.2022.108080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Fluidization centennial and the decades of research and development in Japan. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.118093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Tashakori-Asfestani F, Kazemi S, Zarghami R, Mostoufi N. Effect of inter-particle forces on solids mixing in fluidized beds. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.118098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Study on liquid-solid fluidisation behaviour of coarse coal particles: Experiment and CFD simulation. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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20
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Song Z, Li Q, Li F, Chen Y, Ullah A, Chen S, Wang W. MP-PIC simulation of dilute-phase pneumatic conveying in a horizontal pipe. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Mishra I, Molnar MJ, Hwang MY, Shetty A, Hrenya CM. Experimental validation of the extraction of a particle-particle cohesion model (square-force) from simple bulk measurements (defluidization in a rheometer). Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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22
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Xu H, Shen S, Wang W, Ma C, Hao Z, Zhang M. Numerical simulation study on mixing characteristics of binary Geldart-D particles in a pressurized fluidized bed. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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23
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Grohn P, Oesau T, Heinrich S, Antonyuk S. Investigation of the influence of wetting on the particle dynamics in a fluidized bed rotor granulator by MPT measurements and CFD-DEM simulations. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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24
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25
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He M, Zhao B, Wang J. Particle Pressures in Gas-Fluidized Beds: A Computational Fluid Dynamics–Discrete Element Method Study. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mingming He
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, P.O. Box 353, Beijing 100190, People’s Republic of China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China
| | - Bidan Zhao
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, P.O. Box 353, Beijing 100190, People’s Republic of China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China
| | - Junwu Wang
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, P.O. Box 353, Beijing 100190, People’s Republic of China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China
- Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
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26
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Cai W, Xia X, Li X, Chen X, Xu Z, Lu H. Transition of sub- and super-critical water fluidized beds using low density ratio kinetic theory of granular flow. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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27
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Thakur AK, Kumar R, Banerjee N, Chaudhari P, Gaurav GK. Hydrodynamic modeling of liquid-solid flow in polyolefin slurry reactors using CFD techniques – A critical analysis. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117544] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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28
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A Combined Experimental and Numerical Thermo-Hydrodynamic Investigation of High-Temperature Fluidized-Bed Thermal Energy Storage. Processes (Basel) 2022. [DOI: 10.3390/pr10061097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
The present research describes the design, analysis, and modeling of an air-granular particle fluidized-bed system with dimensions of 0.08 m × 0.4 m × 0.08 m. The hydrodynamic and thermal experiments are designed to verify the numerical model previously created for this purpose. The gas-solid two-phase flow is described using a three-dimensional, two-fluid model based on the Eulerian–Eulerian method. The experiment is conducted, and the numerical model is updated for the new geometry while maintaining the solution parameters. Silica sand and sintered bauxite particles are employed in both experimental and numerical investigations to examine the behaviors of these particles. The hydrodynamic validity of the numerical model is established by the use of experimental findings for pressure drop and bed expansion ratio. The thermal tests are conducted with 585 K hot sand, and the temperature distribution in the bed is measured using K-type thermocouples and compared with the simulation data. Both the hydrodynamical and thermal experimental data appear to agree with the conclusions of the computational analyses. The validated model is then used to mimic the performance of the bed at elevated temperatures. The performance indicators are discussed and calculated for 973 K, demonstrating that as the temperature rises, the system efficiency increases.
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29
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Hoghooghi Bonyad A, Fatemi S, Mansourpour Z. Dynamic behavior of CO 2 adsorption from CH 4 mixture in a packed bed of SAPO-34 by CFD-based modeling. CHEMICAL PRODUCT AND PROCESS MODELING 2022. [DOI: 10.1515/cppm-2021-0071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this work, a dynamic non-isothermal adsorption process of CH4 and CO2 in a fixed bed of SAPO-34 particles was modeled by coupled DEM-CFD. This Euler–Lagrange method gives access to specification of each adsorbent pellet including location, temperature and concentrations, and facilitates study of phenomena like adsorption. Transport phenomena including heat and mass transfer in fluid and between solid and gas were taken into account. Eventually the model was validated by experimental results of breakthrough curve. Especially near wall channeling effect and the role of inlet feed velocity on the bed efficiency were addressed in this work. Local and bulk porosity values calculated using DEM model showed an acceptable agreement with previous empirical equations. Results indicated that this coupled method can be applied as a promising tool to study the mass transfer zone and efficiency of the adsorption process. The results revealed that as the feed continues to flow into the column, the lower layers of the adsorbent particles become practically saturated and then the mass transfer zone starts moving upward to a region of fresher adsorbent in the column. Also, the results showed that, at a low inlet velocity with a low Peclet number (Pe = 0.195), channeling effect is reduced and the diffusion mechanism controls the mass transfer. However, HETP enhances with increase in the feed gas velocity (Pe = 2.25) as well as increase in deviation from plug flow regime, and consequently the adsorption efficiency decreases. HETP decreases drastically at the beginning with increase in interstitial velocity. Increase in the interstitial velocity beyond a particular value of 0.5 cm s−1 leads to increase in the HETP value. This trend and presence of a minimum in this graph were explained based on Van Deemter concept.
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Affiliation(s)
- Ahmad Hoghooghi Bonyad
- School of Chemical Engineering, College of Engineering, University of Tehran , P.O. Box 11155/4563 , Tehran , Iran
| | - Shohreh Fatemi
- School of Chemical Engineering, College of Engineering, University of Tehran , P.O. Box 11155/4563 , Tehran , Iran
| | - Zahra Mansourpour
- School of Chemical Engineering, College of Engineering, University of Tehran , P.O. Box 11155/4563 , Tehran , Iran
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Zhang M, Zhao L, Zhang S, Wu W, Hui D, Zhang J. Numerical simulation of complex thermal decomposition processes in pyrolysis furnace for recycling solid waste Mg(NO3)2·2H2O. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.03.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Micale D, Ferroni C, Uglietti R, Bracconi M, Maestri M. Computational Fluid Dynamics of Reacting Flows at Surfaces: Methodologies and Applications. CHEM-ING-TECH 2022. [DOI: 10.1002/cite.202100196] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Daniele Micale
- Politecnico di Milano Laboratory of Catalysis and Catalytic Processes Dipartimento di Energia via La Masa 34 20156 Milano Italy
| | - Claudio Ferroni
- Politecnico di Milano Laboratory of Catalysis and Catalytic Processes Dipartimento di Energia via La Masa 34 20156 Milano Italy
| | - Riccardo Uglietti
- Politecnico di Milano Laboratory of Catalysis and Catalytic Processes Dipartimento di Energia via La Masa 34 20156 Milano Italy
| | - Mauro Bracconi
- Politecnico di Milano Laboratory of Catalysis and Catalytic Processes Dipartimento di Energia via La Masa 34 20156 Milano Italy
| | - Matteo Maestri
- Politecnico di Milano Laboratory of Catalysis and Catalytic Processes Dipartimento di Energia via La Masa 34 20156 Milano Italy
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Markauskas D, Platzk S, Kruggel-Emden H. Comparative numerical study of pneumatic conveying of flexible elongated particles through a pipe bend by DEM-CFD. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Zhao P, Xu J, Chang Q, Ge W, Wang J. Euler-Lagrange simulation of dense gas-solid flow with local grid refinement. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117199] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Chen R, Zhang Z. Numerical study of large particles flowing in non‐Newtonian fluids with nearly neutral buoyancy force. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.16034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ruiyan Chen
- Department of Mechanical & Materials Engineering University of Nebraska‐Lincoln Lincoln Nebraska USA
| | - Zhaoyan Zhang
- Department of Mechanical & Materials Engineering University of Nebraska‐Lincoln Lincoln Nebraska USA
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CFD-DEM modeling of filtered fluid-particle drag and heat transfer in bidisperse gas-solid flows. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2021.116896] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Experimental and Discrete Element Model Investigation of Limestone Aggregate Blending Process in Vertical Static and/or Conveyor Mixer for Application in the Concrete Mixture. Processes (Basel) 2021. [DOI: 10.3390/pr9111991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The numerical model of the granular flow within an aggregate mixture, conducted in the vertical static and/or the conveyor blender, was explored using the discrete element method (DEM) approach. The blending quality of limestone fine aggregate fractions binary mixture for application in self-compacting concrete was studied. The potential of augmenting the conveyor mixer working efficiency by joining its operation to a Komax-type vertical static mixer, to increase the blending conduct was investigated. In addition the impact of the feed height on the flow field in the cone-shaped conveyor mixer was examined using the DEM simulation. Applying the numerical approach enabled a deeper insight into the quality of blending actions, while the relative standard deviation criteria ranked the uniformity of the mixture. The primary objective of this investigation was to examine the behavior of mixture for two types of blenders and to estimate the combined blending action of these two mixers, to explore the potential to augment the homogeneity of the aggregate fractions binary mixture, i.e., mixing quality, reduce the blending time and to abbreviate the energy-consuming.
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Hesse R, Krull F, Antonyuk S. Prediction of random packing density and flowability for non-spherical particles by deep convolutional neural networks and Discrete Element Method simulations. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.07.056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Córcoles J, Acosta-Iborra A, Almendros-Ibáñez J, Sobrino C. Numerical simulation of a 3-D gas-solid fluidized bed: Comparison of TFM and CPFD numerical approaches and experimental validation. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.08.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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Influence of model particle size and spatial resolution in coarse-graining DEM-CFD simulation. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.08.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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42
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Direct comparison of CFD-DEM simulation and experimental measurement of Geldart A particles in a micro-fluidized bed. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2021.116725] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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43
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Numerical and experimental validation of a detailed non-isothermal CFD-DEM model of a pilot-scale Wurster coater. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.05.100] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Lian G, Zhong W, Liu X. CFD–DEM Investigation of Fuel Dispersion Behaviors in a 3D Fluidized Bed. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02443] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Guoqing Lian
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China
| | - Wenqi Zhong
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China
| | - Xuejiao Liu
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China
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Zhao B, Wang J. Statistical foundation of EMMS-based two-fluid models for heterogeneous gas-solid flow. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2021.116678] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Raheem DG, Yılmaz B, Özdoğan S. Comparison of oxygen enriched and oxy-combustion characteristics of lignite in a CFB: Modelling and experimental verification. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.05.058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Mu L, Buist K, Kuipers J, Deen N. CFD-DEM simulations of riser geometry effect and cluster phenomena. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.07.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Coarse-grained CFD-DEM simulation to determine the multiscale characteristics of the air dense medium fluidized bed. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.05.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Yang W, Luo Z, Zou Z, Zhao C, You Y. Modelling and analysis of bubble entrapment by solidification shell in steel continuous casting considering bubble interaction with a coupled CFD-DBM approach. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.05.044] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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50
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Siegmann E, Enzinger S, Toson P, Doshi P, Khinast J, Jajcevic D. Massively speeding up DEM simulations of continuous processes using a DEM extrapolation. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.05.067] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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