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Brownian dynamics simulations of hard rods in external fields and with contact interactions. Phys Rev E 2022; 106:054606. [PMID: 36559370 DOI: 10.1103/physreve.106.054606] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 10/24/2022] [Indexed: 11/12/2022]
Abstract
We propose a simulation method for Brownian dynamics of hard rods in one dimension for arbitrary continuous external force fields. It is an event-driven procedure based on the fragmentation and mergers of clusters formed by particles in contact. It allows one to treat particle interactions in addition to the hard-sphere exclusion as long as the corresponding interaction forces are continuous functions of the particle coordinates. We furthermore develop a treatment of sticky hard spheres as described by Baxter's contact interaction potential.
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2
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Modeling of dynamic characteristic of particle in transient gas–solid flow via a machine learning approach. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117939] [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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3
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Effects of drag and subgrid-scale turbulence modeling on gas–solid hydrodynamics of a pilot-scale circulating fluidized bed. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2021.117093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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4
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Cluster Identification by a k-means Algorithm-Assisted Imaging Method in a Laboratory-Scale Circulating Fluidized Bed. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c03648] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Mesoscale analysis on clusters in conjunction with fast fluidized bed modeling. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2021.10.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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8
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9
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10
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Experimental Study of the Inner Solid Circulation Pattern in the Multistage Riser. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Influence of ultrasonic waves on the gas-solid flow and the solids dispersion in a CFB riser: Numerical and experimental study. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.05.051] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Effect of the Scale-Up Process on the Reactor Performance within the Riser: Simulation Using Ozone Decomposition. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Numerical investigation of the penetrating gas flow into particle clusters for circulating fluidized beds. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.04.046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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15
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Ethylbenzene dehydrogenation over Fe2O3 promoted TiO2-ZrO2 catalysts and corresponding conceptual fluidized bed process. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.03.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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17
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Experimental investigation of the instantaneous flow structure in circulating fluidized bed: Phase characterization and validation. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2020.115946] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Do particle-related parameters influence circulating fluidized bed (CFB) riser flux and elutriation? Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2020.115935] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Clusters intermittent simulations using dynamic cluster structure-dependent drag model in gas-particles risers. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2020.115643] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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A Comprehensive Characterization of Aggregative Flow in a Circulating Fluidized Bed (2): High-Density Downer. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06615] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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A Comprehensive Characterization of Aggregative Flow in a Circulating Fluidized Bed (1): High-Density Riser. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06616] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Application of machine learning methods to understand and predict circulating fluidized bed riser flow characteristics. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2020.115503] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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24
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Capturing the instantaneous flow structure in gas-solid circulating fluidized bed using high-speed imaging and fiber optic sensing. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.05.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Quantitative analysis and speciation of alkali metal emissions from biomass combustion in a 150 kWth furnace by optical emission spectroscopy. CHEM ENG COMMUN 2019. [DOI: 10.1080/00986445.2019.1647182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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27
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Modified Force Balance Model of Estimating Agglomerate Sizes in a Gas–Solid Fluidized Bed. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01680] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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29
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On the hydrodynamics of crystal clustering. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2019; 377:20180015. [PMID: 30966929 PMCID: PMC6335487 DOI: 10.1098/rsta.2018.0015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/16/2018] [Indexed: 06/02/2023]
Abstract
The formation of crystal clusters may influence the mechanical behaviour of magmas. However, whether clusters form largely from physical contact in a mobile state during sedimentation and stirring, or require residence in a crystal mush, is not well understood. In this paper, we use discrete-element fluid dynamics numerical experiments to illuminate the potential for clustering from both sedimentation and open-system mixing in a model olivine basalt reservoir for three different initial solid volume per cents. Crystal clustering is quantified using both bulk measures of clustering such as the R index and Ripley's L(r) and g(r) functions and with a variable scale technique called Voronoi tessellations, which also provide orientation data. Probability density functions for the likelihood of crystal clustering under freely circulating conditions indicate that there is nearly an equal likelihood for clustering and non-clustered textures in natural examples. A crystal cargo in igneous rock suites exhibiting a dominance of crystal clusters may be largely sampling magmatic materials formed in a crystal mush. This article is part of the Theo Murphy meeting issue 'Magma reservoir architecture and dynamics'.
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Numerical investigation of the cluster property and flux distribution in three-dimensional full-loop circulating fluidized bed with multiple parallel cyclones. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2018.10.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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31
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33
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Effects of Different Gaseous Nozzle Injections on Gas–solid Dynamic Mixing in FCC Riser. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b05033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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34
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35
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New correlations for slip flow and heat transfer over a micro spherical particle in gaseous fluid. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.07.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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36
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Statistic model for predicting cluster movement in circulating fluidized bed (CFB) risers. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.06.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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Effect of moisture content and length of flexible filamentous particles on cluster characteristics in a fluidized bed dryer. Chem Eng Res Des 2018. [DOI: 10.1016/j.cherd.2018.06.009] [Citation(s) in RCA: 6] [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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38
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39
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Study on the distribution characteristics of flexible filamentous particle clusters in a fluidized bed dryer. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.02.040] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Direct Numerical Simulation of Fluid Flow and Mass Transfer in Particle Clusters. Ind Eng Chem Res 2018; 57:4664-4679. [PMID: 29657359 PMCID: PMC5894441 DOI: 10.1021/acs.iecr.8b00268] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 03/09/2018] [Accepted: 03/15/2018] [Indexed: 11/28/2022]
Abstract
In this paper, an efficient ghost-cell based immersed boundary method is applied to perform direct numerical simulation (DNS) of mass transfer problems in particle clusters. To be specific, a nine-sphere cuboid cluster and a random-generated spherical cluster consisting of 100 spheres are studied. In both cases, the cluster is composed of active catalysts and inert particles, and the mutual influence of particles on their mass transfer performance is studied. To simulate active catalysts the Dirichlet boundary condition is imposed at the external surface of spheres, while the zero-flux Neumann boundary condition is applied for inert particles. Through our studies, clustering is found to have negative influence on the mass transfer performance, which can be then improved by dilution with inert particles and higher Reynolds numbers. The distribution of active/inert particles may lead to large variations of the cluster mass transfer performance, and individual particle deep inside the cluster may possess a high Sherwood number.
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43
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Heat transfer and frictional resistance characteristics of the water wall tube of an ultra-supercritical CFB boiler. J Supercrit Fluids 2017. [DOI: 10.1016/j.supflu.2017.05.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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44
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45
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46
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Effect of cross-flow velocity, oil concentration and salinity on the critical flux of an oil-in-water emulsion in microfiltration. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.02.011] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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47
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